coincidences Get Printable Handwriting Hear It! Say It! Write It! Learn It! Spelling Test Definition noun. two things that happen at the same time by accident but seem to have some connection Example Sentence An alert scientist is distrustful of coincidences. Synonyms accident; fluke; chance event Antonyms planned occurance Hear It! Say It! Write It! coincidences Switch to cursive Start Share with your friends: