noun
non-support; disapproval
Used in formal contexts such as opinion polls, surveys, or official statements to indicate lack of support or disapproval.
世論調査では、不支持が支持を上回った。
In the opinion poll, disapproval exceeded approval.
彼の提案に対する不支持の声が上がった。
Voices of disapproval were raised against his proposal.
反対 is a more general and common word for 'opposition', while 不支持 is specifically about lack of support or disapproval, often in formal or survey contexts.
Compound of 不 (fu, 'not') and 支持 (shiji, 'support'). The word follows a standard Sino-Japanese negation pattern.