Decrease
luminosity is synonymous to brightness
Syonymous is the adjectival form of synonym.
You've spelled the word "synonymous" correctly :)
Posterior?
extend
Synonymous means having the same meaning as another word or phrase. Aggression is often believed to be synonymous with violence.
synonymous.
avarice
Necessary, important
Well-being.
I believe you are trying to spell "synonymous" (same meaning).
Words that are not synonymous with the word 'preposterous' include:appropriatecorrectfairjustlogicalproperrationalreasonablesensiblesoundtruevalid