Standard Lemma guide

optimistic

adj · 4 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.

  • Received-Pronunciation: /ˌɒptɪˈmɪstɪk/
  • Southern-England: Recorded audio is listed in the source snapshot.
  • Canada, US: /ˌɑptɪˈmɪstɪk/
  • Canada, US: /ˌɑptəˈmɪstɪk/
  • rhymes with -ɪstɪk
  • CMU ARPABET: AA2 P T AH0 M IH1 S T IH0 K Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.

1

adj

Meaning 1

Expecting the best in all possible ways.

Definition source: English Wiktionary via Wiktextract

Examples

  • in an optimistic mood
  • optimistic plans
  • took an optimistic view

Meaning relationships

Synonyms: upbeat, rosy

Antonyms: pessimistic

2

adj

Meaning 2

Allowing other processes to perform transactions on the same data at the same time, and checking for conflicts only when changes need to be written back.

Definition source: English Wiktionary via Wiktextract

Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences

Examples

  • optimistic concurrency
  • optimistic locking

Meaning relationships

Synonyms: none provided

Antonyms: none provided

3

adjective

Meaning 3

expecting the best in this best of all possible worlds

Definition source: Princeton WordNet 3.0

Examples

  • in an optimistic mood
  • optimistic plans
  • took an optimistic view

Meaning relationships

Synonyms: none provided

Antonyms: pessimistic

4

adjective satellite

Meaning 4

expecting the best

Definition source: Princeton WordNet 3.0

Examples

  • an affirmative outlook

Meaning relationships

Synonyms: affirmative

Antonyms: none provided

History

Etymology

Etymology tree Proto-Indo-European *h1ep-der. Proto-Indo-European *h1épsder. Proto-Indo-European *h1epi Proto-Indo-European *-tm̥mos ? Latin optimus Proto-Indo-European *-id- Proto-Indo-European *-yéti Proto-Indo-European *-idyéti Proto-Hellenic *-íďďō Ancient Greek -ῐ́ζω (-ĭ́zō) Proto-Indo-European *-mos Proto-Indo-European *-mós Ancient Greek -μός (-mós) Ancient Greek -ῐσμός (-ĭsmós)der. Latin -ismusbor. French -isme French optim(isme) ▲ Ancient Greek -ῐ́ζω (-ĭ́zō) Proto-Hellenic *-tās Ancient Greek -τής (-tḗs) Ancient Greek -ῐστής (-ĭstḗs)bor. Latin -istabor. French -iste French optimistebor. English optimist Proto-Indo-European *-ikos Proto-Italic *-ikos Latin -icuslbor. Old French -iquebor. Middle English -ik English -ic English optimistic From optimist + -ic.

Across languages

Translations

51 source translations are retained for this English entry.

  • Arabic: مُتَفَائِل (mutafāʔil) — expecting a good outcome
  • Armenian: լավատես (lavates) — expecting a good outcome
  • Armenian: լավատեսական (lavatesakan) — expecting a good outcome
  • Belarusian: аптымісты́чны (aptymistýčny) — expecting a good outcome
  • Bulgarian: оптимисти́чен (optimistíčen) — expecting a good outcome
  • Catalan: optimista — expecting a good outcome
  • Chinese Mandarin: 樂觀的 /乐观的 (lèguān de) — expecting a good outcome
  • Czech: optimistický — expecting a good outcome
  • Danish: optimistisk — expecting a good outcome
  • Dutch: optimistisch — expecting a good outcome
  • Esperanto: optimisma — expecting a good outcome
  • Finnish: optimistinen — expecting a good outcome
  • French: optimiste — expecting a good outcome
  • Galician: optimista — expecting a good outcome
  • Georgian: ოპტიმისტური (oṗṭimisṭuri) — expecting a good outcome
  • German: optimistisch — expecting a good outcome
  • Greek: αισιόδοξος (aisiódoxos) — expecting a good outcome
  • Hawaiian: hauʻoli — expecting a good outcome
  • Hebrew: אוֹפְּטִימִי — expecting a good outcome
  • Hindi: आशावादी (āśāvādī) — expecting a good outcome
  • Hungarian: optimista — expecting a good outcome
  • Hungarian: derűlátó — expecting a good outcome
  • Italian: ottimista — expecting a good outcome
  • Japanese: 楽観的 (rakkanteki) — expecting a good outcome
  • Korean: 낙천적인 (nakcheonjeogin) — expecting a good outcome
  • Korean: 낙관적인 (nakgwanjeogin) — expecting a good outcome
  • Low German: toversichtlich — expecting a good outcome
  • Low German: optimist'sch — expecting a good outcome
  • Māori: ngākau rorotu — expecting a good outcome
  • Marathi: आशावादी (āśāvādī) — expecting a good outcome
  • Norwegian: optimistisk — expecting a good outcome
  • Persian: خوش بین — expecting a good outcome
  • Persian: خوش بینانه — expecting a good outcome
  • Polish: optymistyczny — expecting a good outcome
  • Portuguese: otimista — expecting a good outcome
  • Romanian: optimist — expecting a good outcome
  • Russian: оптимисти́ческий (optimistíčeskij) — expecting a good outcome
  • Russian: оптимисти́чный (optimistíčnyj) — expecting a good outcome
  • Serbo-Croatian: оптимистичан — expecting a good outcome
  • Serbo-Croatian: optimističan — expecting a good outcome
  • Slovak: optimistický — expecting a good outcome
  • Spanish: optimista — expecting a good outcome
  • Swedish: optimistisk — expecting a good outcome
  • Thai: มองโลกในแง่ดี — expecting a good outcome
  • Turkish: iyimser — expecting a good outcome
  • Ukrainian: оптимісти́чний (optymistýčnyj) — expecting a good outcome
  • Vietnamese: lạc quan — expecting a good outcome
  • Volapük: fredimik — expecting a good outcome
  • Yiddish: אָפּטימיסטיש (optimistish) — expecting a good outcome
  • Finnish: optimistinen — computing
  • Portuguese: otimista — computing
Real reading context

optimistic in complete knowledge articles