SAT IELTS principle Definition A fundamental truth, law, or rule that guides behavior or thought. Example "He refused the bribe on principle." Sign in to save SAT Quiz → IELTS Quiz → ← principal prior → Study tips featuring "principle" Map the Author's Attitude Before Reading Questions Audit Your Own Writing for Lexical Resource Stop Skipping Words and Read the Tone Related words SAT antonym SAT abase SAT abdicate SAT abdomen SAT abduction SAT abet SAT abeyance SAT abject SAT abjure SAT ablution SAT abnegate SAT abnormal