A synonym for temper is temperament.
A synonym for varied is diverse.
I don't think there is a synonym for adjoined it is an antonym.
A synonym for plausible is possible.
the synonym for eliminate is discard
substitute
An appropriate synonym for "supplanted" would be "substitute".
backup, temporary, another, alternative, substitute
Examples of synonyms for the word 'pronoun' are word or substitute.
option, vote, pick, choosing, alternative, substitute,
In this sentence, the best synonym for "perspicacious" would be "perceptive" as it conveys the idea of keen insight and understanding.
It’s a synonym. The two words mean the same thin.
Another synonym is intermittent. You could also use the words random irregular occasional
"Substitute" and "switch" are synonyms as they both refer to replacing something with another. However, they are not homophones which are words that sound the same but have different meanings. An antonym of "substitute" could be "original" or "primary" as they denote opposing ideas.
artificial, bogus, copied, counterfeit, fake, false, imitation, manufactured, phony, pretended, sham, simulated, spurious, substitute, synthetic.
A synonym for sick (such as ill) could be substituted.
The pun synonym "bun" refers to a play on words where one word is used in place of another word that sounds similar but has a different meaning. In this case, "bun" is used as a substitute for "pun" to create a humorous wordplay.