Other forms: alibis; alibied; alibiing

Your alibi is evidence that proves your innocence. If you were making cookies with your mom when someone raided your sister's piggy bank, your mom is your alibi, since she knows you were with her when the crime was committed.

The noun alibi is the same word as its Latin root, alibi, which means "excuse." When you provide an alibi, you are giving proof — a certified excuse — that you could not have committed a crime. Alibi is easy to confuse with alias, which means "an assumed, or false, name."

Definitions of alibi
  1. noun
    (law) a defense by an accused person purporting to show that he or she could not have committed the crime in question
    see moresee less
    type of:
    defence, defense, vindication
    the justification for some act or belief
  2. noun
    a defense of some offensive behavior or some failure to keep a promise etc.
    “every day he had a new alibi for not getting a job”
    synonyms: exculpation, excuse, self-justification
    see moresee less
    extenuation, mitigation
    a partial excuse to mitigate censure; an attempt to represent an offense as less serious than it appears by showing mitigating circumstances
    type of:
    defence, defense, vindication
    the justification for some act or belief
  3. verb
    exonerate by means of an alibi
    see moresee less
    type of:
    excuse, explain
    serve as a reason or cause or justification of




Cite this entry
  • MLA
  • APA
  • Chicago

Copy citation
DISCLAIMER: These example sentences appear in various news sources and books to reflect the usage of the word ‘alibi'. Views expressed in the examples do not represent the opinion of or its editors. Send us feedback
Word Family

Look up alibi for the last time

Close your vocabulary gaps with personalized learning that focuses on teaching the words you need to know.

VocabTrainer -'s Vocabulary Trainer