The word 'weak' has many synonyms, so it is not possible to say what 'the' synonym of it is. Some synonyms are powerless, puny, and ineffectual.
detector or metal detectors
It depends. A synonym or an antonym to what?For instance:The word "debris" is an antonym to the words "whole, complete, neatness".The word "debris" is a synonym to the word "trash, remains, rubbish".
A synonym for common noun is word.
Prediction
play
The word "weak" (not strong, not sturdy) has the synonyms frail, fragile, feeble, or flimsy.not healthy, sick
feeble, weak, puny, infirm, flimsy, delicated, vulnerable, insubstantial
Strong Synonyms: Critical, Mandatory Weak Synonym: Important
weak
Weak is not a synonym for provisional, some synonyms for provisional are temporary, conditional and short term.
Synonym: Squat; Crouch Antonym: Cowardly; Weak
As ser is weak
Synonym: Powerless and weak. Antonym: Powerful and strong.
Infirm's synonym is weak so just use the common word weak in a sentence and replace it with infirm. For instance... My grandmother became weak with age. My grandmother became infirm with age. Voila! By doing that you just made a sentence for INFIRM.
synonymize
word for word
soft, feeble, weak, flabby