doubt; suspicion; apprehension
A feeling of doubt or suspicion, often used in the set phrase 疑心暗鬼 (once you suspect something, everything looks suspicious).
I became suspicious and couldn't take his words at face value.
I felt suspicion toward her attitude.
He came to harbor suspicion toward his colleague.
My suspicion about her behavior only kept growing.
疑い is the everyday native Japanese word for doubt or suspicion, whereas 疑心 is a Sino-Japanese compound with a more formal, psychological nuance.
信頼 means trust or confidence in someone, the opposite state of mind from 疑心, which is suspicion or doubt.
猜疑心 refers to a deep-seated, persistent distrust of others, while 疑心 is a more general term for a feeling of doubt or suspicion.
Standard kanji spelling; commonly used in compounds like 疑心暗鬼.
Sino-Japanese compound of 疑 (doubt) and 心 (heart/mind). The exact historical derivation is uncertain, but the combination naturally expresses a suspicious state of mind.