1. delay or resist something, a negative reaction to a change
push back an appointment/meeting
The noun 'pushback' can refer to a bad or negative reaction to something. If you suggest an idea and others have a negative response you can say your idea experienced pushback. the phrasal verb 'push back' can mean to move something to a later time, such as pushing back a meeting or an appointment. you can also say you 'push back' something meaning to discover something new or an improved way of doing something. If you 'push back' against something it can mean to resist a change or new idea. and be in opposition to it.