Necessarily/ˌnesəˈserəli/ Definition 1 of 1Pro Tip 1/3Not a Guarantee Necessarily implies something is likely, but not 100% certain. High SAT scores don't necessarily secure you a place in college. Pro Tip 2/3Context Matters The word 'necessarily' can change meaning slightly depending on the context. This rule isn't necessarily applicable in every situation. Pro Tip 3/3Debate and Opinion Use 'necessarily' to politely disagree or show skepticism about someone else's statement. I don't necessarily agree with his conclusions.