optimistic

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

1. expecting the best in this best of all possible worlds (Freq. 2)
- in an optimistic mood
- optimistic plans
- took an optimistic view
• Ant:
pessimistic
• Similar to:
bullish, cheerful, pollyannaish, upbeat, rose-colored,
rosy, starry-eyed, sanguine
• See Also:
hopeful, positive
• Derivationally related forms:
optimism
2. expecting the best
- an affirmative outlook
• Syn:
affirmative
• Similar to:
positive
• Derivationally related forms:
optimism, affirmativeness (for: affirmative)