The meaning of CROP UP is to come or appear when not expected. How to use crop up in a sentence. to come or appear when not expected… See the full definition. Games; Word of the Day; Grammar; Wordplay; New Slang; Rhymes; Word Finder; Thesaurus; Join MWU; More. Games; Word of the Day; Grammar; Wordplay; Slang; Rhymes; Word Finder;

CROP UP definition: 1. to happen or appear, often unexpectedly: 2. to happen or appear, often unexpectedly: 3. to…. Learn more.