1. The doctrine that the existing order of things is on the whole the best possible or even conceivable; a hopeful view of things.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• optimisism,
• opitism,
• optomisum,
• optmism,
• optomisim,
• optimisum,
• optimase,
• optomism,
• optimimum,
• optismism,
• optisism,
• optimissim,
• optemist,
• opmtimisim,
• optmist,
• optomist,
• optimizim,
• opptomism,
• optimiser,
• optimim

• ophidian,
• optimum,
• optimal,
• optimally,
• option,
• optimist,
• optimize,
• optimise,
• optional,
• optimistic.

The adverb form of the word "optimism" is "optimistically".

The adjective form of the word "optimism" is "optimistic".

The plural of the "optimism" can be the "optimisms".

The singular of the "optimism" can be the "optimism".