Noun:

எல்லாம் நன்மைக்கே என்னும் கொள்கை,

optimists's Usage Examples:

There exists two sorts of optimists.

If Piedmont was to be fitted for the part which optimists expected it to play, everything must be built up anew.

The optimists in some of us like to see this as a "nice girl finishing first" as one Yahoo reviewer put it.

This book began with the assertion that it is the optimists who get things done.

Synonyms:

individual, somebody, soul, millenarian, chiliast, millenarist, mortal, person, someone,

Antonyms:

acquaintance, good guy, introvert, fat person, pessimist,