"Demonstrable" is a word in ENGLISH

demonstrable ENGLISH
Definition:

Capable of being demonstrated; that can be proved
beyond doubt or question.

demonstrable ENGLISH
Definition:

Proved; apparent.

Few words of positivity

How can a man’s candour be seen in all its lustre unless he has a few failings to talk of? But he had an agreeable confidence that his faults were all of a generous kind—impetuous, arm-blooded, leonine; never crawling, crafty, reptilian.

George Eliot, Adam Bede

WORD SUGGESTIONS
Laugh your heart out.

Why was the cowboy a lot of laughs?He was always horsing around.

evincible ENGLISH

Capable of being proved or clearly brought to light; demonstrable.

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provable ENGLISH

Capable of being proved; demonstrable.

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