mistrust
definition
lack of confidence in the honesty or reliability of someone or something
example
Her continuous lies led to a deep mistrust between the friends, making it hard for them to reconcile.
synonyms
distrustdoubtskepticism
word origin — The word 'mistrust' originates from the Middle English 'mistrusten', which is formed from 'mis-' meaning 'wrongly' and 'trust', derived from Old Norse 'trú', meaning 'faith or belief'.