alibi
[noun]
Synonyms: excuse, defence, explanation, justification, plea, pretext, reason

[TahlilGaran] English Synonym Dictionary ▲

al‧i‧bi /ˈæləbaɪ, ˈælɪbaɪ/ noun [countable]
[Date: 1600-1700; Language: Latin; Origin: 'somewhere else']

1. something that proves that someone was not where a crime happened and therefore could not have done it
a perfect/cast-iron/unshakeable etc alibi
He had a perfect alibi and the police let him go.

2. an excuse for something you have failed to do or have done wrong

[TahlilGaran] Dictionary of Contemporary English ▲

alibi
noun
ADJ. cast-iron, good, perfect, solid She was in the office all of Wednesday and so has a cast-iron alibi.
false
VERB + ALIBI have | establish, provide, supply The videotape would have been useful to establish alibis for the defendants.
PREP. ~ for The accused was not able to provide an alibi for the evening.

[TahlilGaran] Collocations Dictionary ▲