Phrase guide

open up

verb · 17 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.

  • US: Recorded audio is listed in the source snapshot.

1

verb

Meaning 1

To open.

Definition source: English Wiktionary via Wiktextract

Usage: ambitransitive

Examples

  • Some vacancies have opened up due to retirements.
  • Open up the door!
  • The executive pay gap is opening up again.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

verb

Meaning 2

To widen.

Definition source: English Wiktionary via Wiktextract

Usage: ambitransitive

Examples

  • The corridor gradually opened up into a triangular room.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

verb

Meaning 3

To bring up (a topic etc.).

Definition source: English Wiktionary via Wiktextract

Usage: transitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

verb

Meaning 4

To reveal (oneself); to share personal information about oneself; to become communicative.

Definition source: English Wiktionary via Wiktextract

Usage: ambitransitive

Examples

  • After three hours of questioning, he finally opened up.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

5

verb

Meaning 5

To commence a literal or figurative battery of attacks.

To commence firing weapons.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

Examples

  • As the convoy entered the pass, we opened up on them with everything we had.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

6

verb

Meaning 6

To commence a literal or figurative battery of attacks.

To rain.

Definition source: English Wiktionary via Wiktextract

Usage: figuratively, intransitive

Examples

  • The sky has really opened up. I've never seen this much rain!

Meaning relationships

Synonyms: none provided

Antonyms: none provided

7

verb

Meaning 7

To commence a literal or figurative battery of attacks.

To berate; to begin shouting at or insulting someone or something.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

Examples

  • As soon as she saw him, she just opened up!

Meaning relationships

Synonyms: none provided

Antonyms: none provided

8

verb

Meaning 8

To begin running, driving, travelling, etc., at maximum (or faster) speed.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

9

verb

Meaning 9

Synonym of cheat out (“to face or turn toward the audience more than would be natural”).

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

Topics: entertainment, lifestyle, theater

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: cheat out

Antonyms: none provided

10

verb

Meaning 10

Of wine: to develop its full flavor a short time after being uncorked and poured.

Definition source: English Wiktionary via Wiktextract

Usage: intransitive

Topics: beverages, food, lifestyle, oenology, wine

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

11

verb

Meaning 11

make available

Definition source: Princeton WordNet 3.0

Examples

  • This opens up new possibilities

Meaning relationships

Synonyms: open

Antonyms: none provided

Broader terms: yield, give, afford

12

verb

Meaning 12

become available

Definition source: Princeton WordNet 3.0

Examples

  • an opportunity opened up

Meaning relationships

Synonyms: open

Antonyms: none provided

Broader terms: arise, come up

13

verb

Meaning 13

talk freely and without inhibition

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: close up

Broader terms: talk, speak, utter, mouth, verbalize, verbalise

14

verb

Meaning 14

cause to open or to become open

Definition source: Princeton WordNet 3.0

Examples

  • Mary opened the car door

Meaning relationships

Synonyms: open

Antonyms: none provided

Narrower terms: unbar, break open, click open, reopen, unlock, unbolt, unseal, uncork, pry, prise, prize, lever, jimmy, gap, breach, lance

15

verb

Meaning 15

become open

Definition source: Princeton WordNet 3.0

Examples

  • The door opened

Meaning relationships

Synonyms: open

Antonyms: none provided

Broader terms: change state, turn

Narrower terms: unfasten, fly open

16

verb

Meaning 16

open up an area or prepare a way

Definition source: Princeton WordNet 3.0

Examples

  • She pioneered a graduate program for women students

Meaning relationships

Synonyms: pioneer

Antonyms: none provided

Broader terms: introduce, innovate

17

verb

Meaning 17

start to operate or function or cause to start operating or functioning

Definition source: Princeton WordNet 3.0

Examples

  • open a business

Meaning relationships

Synonyms: open

Antonyms: none provided

Narrower terms: establish, set up, found, launch

History

Etymology

No etymology was provided for this word.

Across languages

Translations

19 source translations are retained for this English entry.

  • French: ouvrir — to open
  • German: öffnen — to open
  • Italian: aprire — to open
  • Māori: matapihipihi — to open
  • Occitan: obrir — to open
  • Occitan: dobrir — to open
  • Polish: otwierać — to open
  • Polish: otworzyć — to open
  • Tày: bí nhác — to open
  • Tày: bjể — to open
  • Vietnamese: mở — to open
  • French: s'ouvrir — to become communicative
  • Italian: rivelare — to become communicative
  • Polish: otwierać się — to become communicative
  • Polish: otworzyć się — to become communicative
  • French: ouvrir le feu — to commence firing weapons
  • Italian: aprire il fuoco — to commence firing weapons
  • Polish: otwierać ogień — to commence firing weapons
  • Polish: otworzyć ogień — to commence firing weapons