Princeton's WordNet

1. optimism(noun)

   the optimistic feeling that all is going to turn out well

2. optimism(noun)

   a general disposition to expect the best in all things

Kernerman English Learner's Dictionary

1. optimism(noun)ˈɒp təˌmɪz əm

   ≠ pessimism

   There is optimism now about the country's future.

Wiktionary

1. optimism(Noun)

   a tendency to expect the best, or at least, a favourable outcome

   I love her youth, her beauty and above all her optimism that everything will turn out fine.

2. optimism(Noun)

   the doctrine that this world is the best of all possible worlds

3. optimism(Noun)

   the belief that good will eventually triumph over evil

The Nuttall Encyclopedia

1. Optimism

   the doctrine or belief that in the system of things all that happens, the undesirable no less than the desirable, is for the best.

The Roycroft Dictionary

1. optimism

   1. The instinct to lie. 2. Fatty degeneration of intelligence. 3. A philosophical system that attempts to demonstrate the existence of a pre-established Stupidity. 4. To believe that disease, dirt, earthquakes, fires, wars, politicians, blindness, and burial alive, celebrate and enhance the Glory of God. 5. To whistle while passing a cemetery in the night; to sing a hymn while having a tooth pulled; to smile while being robbed. 6. A tipple invented by Leigh Mitchell Hodges, the basis of which is clams and prune juice. 7. A kind of heart stimulant--the digitalis of failure.

The New Hacker's Dictionary

1. optimism

   What a programmer is full of after fixing the last bug and before discovering the next last bug. Fred Brooks's book The Mythical Man-Month (See Brooks's Law) contains the following paragraph that describes this extremely well: All programmers are optimists. Perhaps this modern sorcery especially attracts those who believe in happy endings and fairy godmothers. Perhaps the hundreds of nitty frustrations drive away all but those who habitually focus on the end goal. Perhaps it is merely that computers are young, programmers are younger, and the young are always optimists. But however the selection process works, the result is indisputable: “This time it will surely run,” or “I just found the last bug.”. See also Lubarsky's Law of Cybernetic Entomology.

The Foolish Dictionary, by Gideon Wurdz

1. OPTIMISM

   A cheerful frame of mind that enables a tea-kettle to sing though in hot water up to its nose.

• optimismeAfrikaans
• تَفاؤُلArabic
• оптимизъмBulgarian
• otimismoPortuguese (BR)
• optimismusCzech
• der OptimismusGerman
• optimismeDanish
• αισιοδοξίαGreek
• optimismoSpanish
• optimismEstonian
• خوش بینیFarsi
• optimismiFinnish
• optimismeFrench
• אוֹפּטִימִיוּתHebrew
• आशावादHindi
• optimizamCroatian
• optimizmusHungarian
• optimismeIndonesian
• bjartsÿniIcelandic
• ottimismoItalian
• 楽観Japanese
• 낙관주의Korean
• optimizmasLithuanian
• optimismsLatvian
• sikap optimisMalay
• optimismeDutch
• optimismeNorwegian
• optymizmPolish
• خوش بینیPersian
• خوشبينىPashto
• optimismoPortuguese
• optimismRomanian
• оптимизмRussian
• optimizmusSlovak
• optimizemSlovenian
• optimizamSerbian
• optimismSwedish
• การมองในแง่ดีThai
• iyimserlikTurkish
• 樂觀主義Chinese (Trad.)
• оптимізмUkrainian
• رجائيت، اميد پرستيUrdu
• chủ nghĩa lạc quanVietnamese
• 乐观主义Chinese (Simp.)