optimistic

From optimist + -ic.

• (Received Pronunciation) IPA^(key): /ˌɒptɪˈmɪstɪk/

• Audio (Southern England):

  (file)

• (US) IPA^(key): /ˌɑptɪˈmɪstɪk/
• Rhymes: -ɪstɪk

optimistic (comparative more optimistic, superlative most optimistic)

1. Expecting the best in all possible ways.

   Synonyms: upbeat, rosy

   Antonym: pessimistic

   in an optimistic mood

   optimistic plans

   took an optimistic view

   • 1944 November and December, “What's in a Name?”, in Railway Magazine, page 333:

     Reference was made in the January-February issue to some of the optimistic railway titles of the past, such as the Manchester & Milford, and the Lancashire, Derbyshire & East Coast, neither of which got anywhere near the extremities indicated in their titles during their independent existence.

2. (computing) 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.

   optimistic concurrency

   optimistic locking

• (expecting the best): enthusiasm, hopeful, positive, unabased, undeterred, confident

• optimal
• optimism
• optimist