Standard Lemma guide

assure

verb · 10 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /əˈʃɔː(ɹ)/ pour–poor merger
  • /əˈʃʊə(ɹ)/ without the pour–poor merger
  • General-American: /əˈʃʊɹ/
  • General-American: /əˈʃɝ/
  • US: Recorded audio is listed in the source snapshot.
  • homophone: ashore (with the pour–poor merger)
  • rhymes with -ʊə(ɹ)
  • CMU ARPABET: AH0 SH UH1 R Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

verb

Meaning 1

To make sure and secure; ensure.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

verb

Meaning 2

To give (someone) confidence in the trustworthiness of (something).

Definition source: English Wiktionary via Wiktextract

Usage: transitive

Examples

  • I assure you that the program will work smoothly when we demonstrate it to the client.
  • He assured of his commitment to her happiness.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

verb

Meaning 3

To guarantee, promise (to do something).

Definition source: English Wiktionary via Wiktextract

Usage: obsolete

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

verb

Meaning 4

To reassure.

Definition source: English Wiktionary via Wiktextract

Usage: transitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

verb

Meaning 5

be careful or certain to do something; make certain of something

Definition source: Princeton WordNet 3.0

Examples

  • He verified that the valves were closed
  • See that the curtains are closed
  • control the quality of the product

Meaning relationships

Synonyms: see, check, insure, see to it, ensure, control, ascertain

Antonyms: none provided

Broader terms: verify

Narrower terms: proofread, proof, control, double-check, cross-check, cinch, card, spot-check, cover

6

verb

Meaning 6

assure somebody of the truth of something with the intention of giving the listener confidence

Definition source: Princeton WordNet 3.0

Examples

  • I assured him that traveling to Cambodia was safe

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: persuade

Narrower terms: reassure

7

verb

Meaning 7

make a promise or commitment

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: promise

Antonyms: none provided

Broader terms: declare

Narrower terms: pledge, plight, swear off, contract, undertake, guarantee

8

verb

Meaning 8

make certain of

Definition source: Princeton WordNet 3.0

Examples

  • This nest egg will ensure a nice retirement for us
  • Preparation will guarantee success!

Meaning relationships

Synonyms: guarantee, ensure, insure, secure

Antonyms: none provided

Narrower terms: doom, make

9

verb

Meaning 9

inform positively and with certainty and confidence

Definition source: Princeton WordNet 3.0

Examples

  • I tell you that man is a crook!

Meaning relationships

Synonyms: tell

Antonyms: none provided

Broader terms: affirm, verify, assert, avow, aver, swan, swear

10

verb

Meaning 10

cause to feel sure; give reassurance to

Definition source: Princeton WordNet 3.0

Examples

  • The airline tried to reassure the customers that the planes were safe

Meaning relationships

Synonyms: reassure

Antonyms: none provided

Broader terms: calm, calm down, quiet, tranquilize, tranquillize, tranquillise, quieten, lull, still

History

Etymology

From Old French asseurer (Modern French assurer), from Latin ad- + securus (“secure”). Cognate with Spanish asegurar. Doublet of assecure.

Across languages

Translations

94 source translations are retained for this English entry.

  • Breton: asuri — to make sure and secure
  • Bulgarian: уверявам (uverjavam) — to make sure and secure
  • Catalan: assegurar — to make sure and secure
  • Danish: sikre — to make sure and secure
  • Dutch: verzekeren — to make sure and secure
  • Dutch: afzekeren — to make sure and secure
  • Dutch: beveiligen — to make sure and secure
  • Esperanto: certigi — to make sure and secure
  • Estonian: kinnitama — to make sure and secure
  • Finnish: varmistaa — to make sure and secure
  • Finnish: vakuuttaa — to make sure and secure
  • German: sichern — to make sure and secure
  • Italian: assicurare — to make sure and secure
  • Malayalam: ഉറപ്പാക്കുക (uṟappākkuka) — to make sure and secure
  • Manx: shickyree — to make sure and secure
  • Norwegian Bokmål: sikre — to make sure and secure
  • Norwegian Nynorsk: sikre — to make sure and secure
  • Occitan: assegurar — to make sure and secure
  • Polish: zabezpieczyć — to make sure and secure
  • Polish: asekurować — to make sure and secure
  • Polish: pilnować — to make sure and secure
  • Polish: ubezpieczać — to make sure and secure
  • Portuguese: assegurar — to make sure and secure
  • Romanian: asigura — to make sure and secure
  • Russian: обеспе́чивать (obespéčivatʹ) — to make sure and secure
  • Russian: обеспе́чить (obespéčitʹ) — to make sure and secure
  • Slovak: zabezpečiť — to make sure and secure
  • Slovak: zabezpečovať — to make sure and secure
  • Spanish: asegurar — to make sure and secure
  • Spanish: afianzar — to make sure and secure
  • Spanish: segurar — to make sure and secure
  • Turkish: temin etmek — to make sure and secure
  • Turkish: güvence altına almak — to make sure and secure
  • Ukrainian: забезпечувати (zabezpečuvaty) — to make sure and secure
  • Ukrainian: гарантува́ти (harantuváty) — to make sure and secure
  • Arabic: أَكَّدَ (ʔakkada) — to give someone confidence in the trustworthiness of something
  • Belarusian: запэ́ўніваць (zapéwnivacʹ) — to give someone confidence in the trustworthiness of something
  • Belarusian: запэ́ўніць (zapéwnicʹ) — to give someone confidence in the trustworthiness of something
  • Bulgarian: убеждавам (ubeždavam) — to give someone confidence in the trustworthiness of something
  • Bulgarian: удостоверявам (udostoverjavam) — to give someone confidence in the trustworthiness of something
  • Catalan: assegurar — to give someone confidence in the trustworthiness of something
  • Danish: forsikre — to give someone confidence in the trustworthiness of something
  • Dutch: verzekeren — to give someone confidence in the trustworthiness of something
  • Estonian: veenma — to give someone confidence in the trustworthiness of something
  • Finnish: vakuuttaa — to give someone confidence in the trustworthiness of something
  • French: assurer — to give someone confidence in the trustworthiness of something
  • German: versichern — to give someone confidence in the trustworthiness of something
  • Greek: διαβεβαιώνω (diavevaióno) — to give someone confidence in the trustworthiness of something
  • Hungarian: biztosít — to give someone confidence in the trustworthiness of something
  • Italian: assicurare — to give someone confidence in the trustworthiness of something
  • Italian: garantire — to give someone confidence in the trustworthiness of something
  • Malayalam: ഉറപ്പുനൽകുക (uṟappunalkuka) — to give someone confidence in the trustworthiness of something
  • Norwegian Bokmål: forsikre — to give someone confidence in the trustworthiness of something
  • Norwegian Nynorsk: forsikre — to give someone confidence in the trustworthiness of something
  • Occitan: assegurar — to give someone confidence in the trustworthiness of something
  • Polish: zapewniać — to give someone confidence in the trustworthiness of something
  • Polish: zapewnić — to give someone confidence in the trustworthiness of something
  • Polish: upewniać — to give someone confidence in the trustworthiness of something
  • Polish: upewnić — to give someone confidence in the trustworthiness of something
  • Portuguese: assegurar — to give someone confidence in the trustworthiness of something
  • Portuguese: garantir — to give someone confidence in the trustworthiness of something
  • Romanian: asigura — to give someone confidence in the trustworthiness of something
  • Russian: заверя́ть (zaverjátʹ) — to give someone confidence in the trustworthiness of something
  • Russian: заве́рить (zavéritʹ) — to give someone confidence in the trustworthiness of something
  • Russian: уверя́ть (uverjátʹ) — to give someone confidence in the trustworthiness of something
  • Russian: уве́рить (uvéritʹ) — to give someone confidence in the trustworthiness of something
  • Russian: убежда́ть (ubeždátʹ) — to give someone confidence in the trustworthiness of something
  • Russian: убеди́ть (ubedítʹ) — to give someone confidence in the trustworthiness of something
  • Slovak: ubezpečiť — to give someone confidence in the trustworthiness of something
  • Slovak: ubezpečovať — to give someone confidence in the trustworthiness of something
  • Spanish: asegurar — to give someone confidence in the trustworthiness of something
  • Spanish: avalar — to give someone confidence in the trustworthiness of something
  • Spanish: afiar — to give someone confidence in the trustworthiness of something
  • Spanish: cerciorar — to give someone confidence in the trustworthiness of something
  • Swedish: försäkra — to give someone confidence in the trustworthiness of something
  • Thai: ให้คํามั่น — to give someone confidence in the trustworthiness of something
  • Ukrainian: запевня́ти (zapevnjáty) — to give someone confidence in the trustworthiness of something
  • Ukrainian: запе́внити (zapévnyty) — to give someone confidence in the trustworthiness of something
  • Ukrainian: гарантувати (harantuvaty) — to give someone confidence in the trustworthiness of something
  • Walloon: acertiner — to give someone confidence in the trustworthiness of something
  • Bulgarian: вдъхвам увереност (vdǎhvam uverenost) — to reassure
  • Dutch: verzekeren — to reassure
  • Dutch: geruststellen — to reassure
  • Finnish: varmistaa — to reassure
  • French: rassurer — to reassure
  • Hungarian: biztosít — to reassure
  • Malayalam: ഉറപ്പുനൽകുക (uṟappunalkuka) — to reassure
  • Polish: upewnić — to reassure
  • Polish: upewniać — to reassure
  • Russian: обнадёживать (obnadjóživatʹ) — to reassure
  • Russian: обнадёжить (obnadjóžitʹ) — to reassure
  • Slovak: ubezpečiť — to reassure
  • Slovak: ubezpečovať — to reassure
  • Spanish: asegurar — to reassure