suitable, fitting, relevant, apt, pertinent, befitting, well-suited
allowed, approved, fitting, right, correct, good, suitable, in good condition
Synonyms: convenient, worthwhile, profitable, advantageous, effective, appropriate, beneficial, fit, possible, suitable Antonyms: inexpedient, inappropriate, unprofitable, unbeneficial
A synonym for varied is diverse.
A synonym for temper is temperament.
I don't think there is a synonym for adjoined it is an antonym.
I am searching for an appropriate synonym.
An appropriate synonym for "supplanted" would be "substitute".
appropriate
Trim would be appropriate.
"Commotion" is an appropriate synonym for a lot of noise.
For the purposes of simplicity, I'll presume you're asking for synonyms of laughable. Depending on the situation, 'ridiculous' would generally be an appropriate synonym.
accepted, permitted, official, agreed, appropriate, correct, sanctioned, ratified
co-operativeness
allowed, approved, fitting, right, correct, good, suitable, in good condition
A "decorative cover" would be an appropriate synonym for a duvet cover. While duvet covers are designed to keep dirt away from material, their primary function is decorative.
Depending on the context, appropriate synonyms include demanded, asserted, and took.
A synonym for "nerve" can be "courage" when referring to bravery or boldness. In a biological context, synonyms include "neurite" or "axon" when discussing the nerve as part of the nervous system. The appropriate synonym depends on the context in which the word is used.