understander /ˌəndɚˈstændɚ/noun 1/ˈəndɚˌstændɚ/ noun 1forms 1 noun1 •One who understands something.I am not a speed reader, I am a speed understander. understander /ˈəndɚˌstændɚ/ noun1 •One who physically supports a formation of acrobats, as a human pyramid.He was a strongman and an understander for the acrobats. formsunderstanders