non-support; disapproval
Used in formal contexts such as opinion polls, surveys, or official statements to indicate lack of support or disapproval.
In the opinion poll, disapproval exceeded approval.
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.
disapproval rating
Compound of 不 (fu, 'not') and 支持 (shiji, 'support'). The word follows a standard Sino-Japanese negation pattern.