疑心|ぎしんgishin[0]heiban (flat)

1. noundoubt; suspicion; fear; apprehension

• Synonym疑いうたがいNeutralThe broadest word for doubt; it also covers suspicion of wrongdoing and even the possibility of illness. 「疑心」 points to a suspicious, distrustful state of mind.
• Synonym疑惑ぎわくNeutralDoubt about whether something is genuine or involves wrongdoing, as in 「疑惑が浮上」; news reports often use it for scandals. 「疑心」 describes an overly suspicious mindset.
• Synonym疑念ぎねんWrittenMisgivings held in the mind, as in 「疑念を抱く」. Written in tone and close to 「疑心」, but without its coloring of suspecting other people.
• Synonym懐疑かいぎWrittenAn attitude of not readily believing things — skepticism, as in 「政策の効果に懐疑的」; written in tone. 「疑心」 is a suspicious, distrustful state of mind.
• Synonym疑ぎWrittenDoubt; mostly used as a combining element, as in 「質疑」. Written in tone and rarely used alone.
• Synonym疑問ぎもんNeutralA question or something you don't understand; the focus is on wanting to know, not necessarily on distrusting anyone.
• Synonym嫌疑けんぎNeutralSuspicion of having committed a crime, as in 「嫌疑をかけられる」; the focus is on being suspected of doing something wrong.
• Synonym疑りうたぐりCasualA colloquial noun tied to the verb 「疑る」; mostly seen in 「疑り深い」 and seldom used alone.
• Synonym懐疑心かいぎしんWrittenA written-style word for a skeptical disposition of not believing things readily, as in 「懐疑心が強い」. 「疑心」 carries a stronger nuance of suspecting others.
• Related疑義ぎぎFormalA doubtful point about whether content or a procedure is proper, as in 「疑義を呈する」; formal in register.
• Related半信半疑はんしんはんぎNeutralHalf believing and half doubting; it highlights a state suspended between belief and disbelief rather than outright suspicion.
• Antonym信頼しんらいNeutralAntonym: trusting and relying on someone. It stands opposite to 「疑心」 with its nuance of suspecting others.
• Antonym信用しんようNeutralAntonym: believing someone, or credit and trustworthiness. It stands opposite to 「疑心」 in its sense of doubting.

Use 「疑心」 for a suspicious, paranoid state of mind, as in 「疑心暗鬼」 or 「疑心を抱く」. For doubt in general choose 「疑い」; for doubts about a scandal, 「疑惑」; for suspicion of a crime, 「嫌疑」. The antonym is 「信頼」.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. 疑うたがう心こころ。疑うたがい。
2. 【仏教ぶっきょう用語ようご】根本こんぽん煩悩ぼんのうのひとつ。仏教ぶっきょうの真理しんりに対たいして、疑うたがいの心こころをもつこと。疑ぎ。