Program acceptability is the extent to which a program or intervention is perceived as suitable, agreeable, and appropriate by those who are expected to use or participate in it. Antonyms for the word program acceptability include program unacceptability, program displeasure, program disapproval, program unsuitability, program disagreement, program inappropriateness, program unsatisfactoriness, program unlikability, program unsoundness, and program inadmissibility. When a program is not regarded as acceptable, it may experience reduced participation, low uptake, poor adherence, and ultimately, decreased effectiveness. Therefore, it is important for program designers and implementers to ensure that programs are acceptable to their target audience to achieve the desired outcomes.