穏便|おんびんonbin[0]heiban (flat)

1. na-adjective, noungentle; peaceable; amicable; quiet
2. na-adjective, nounwithout fuss; simply

• Synonym穏やかおだやかNeutralThe most common everyday word for calm and gentle, of weather or personality; it lacks 「穏便」's nuance of smoothing a matter over so it does not blow up.
• Synonym円満えんまんNeutralFocuses on a happy outcome and harmonious relations, as in 「円満解決」 or 「円満退社」; 「穏便」 instead stresses a process kept quiet and free of fuss.
• Synonym温和おんわNeutralMild in personality or climate, and also for measures that are not harsh, as in 「温和な措置」; 「穏便」 puts more weight on keeping a matter from blowing up.
• Related平穏へいおんWrittenFormal, written word for an untroubled state — life or society free of upheaval; it describes a state, not a way of handling a matter.
• Related安穏あんのんWrittenFormal, written word for a peaceful, secure life, as in 「安穏と暮らす」; pejorative or not depends on context. It describes a state of living, not how matters are handled.
• Related平和へいわNeutralPeace in the broad sense — no war or conflict; it is not used for settling something quietly or low-key.
• Related平静へいせいWrittenFormal, written word for calm and composure — an undisturbed mind or situation; it does not refer to one's way of handling a matter.
• Related落ち着いたおちついたNeutralSteady in demeanor or subdued in color; said of a response it means composed, but without 「穏便」's aim of keeping a matter from blowing up.
• Related平和的へいわてきNeutralPeaceful in the sense of not resorting to force; broader in scope than 「穏便」, which is about keeping a matter small and quiet.
• Antonym強硬きょうこうNeutralInsisting on one's position with no concessions — the opposite of 「穏便」's gentle, smoothing-over handling.
• Antonym過激かげきNeutralExtreme and intense in words, deeds, or ideas — the opposite of 「穏便」's safe, low-key approach.
• Antonym乱暴らんぼうNeutralRough in speech or methods, including violence or careless handling — the opposite of 「穏便」's keeping things from blowing up.

Use 「穏便」 for settling a matter quietly so it does not blow up, as in 「穏便に済ませる」. For harmonious relations or a happy outcome pick 「円満」; for plain everyday calm of weather or personality, 「穏やか」. 「平穏」「安穏」「平静」 are written words for peaceful states, not ways of handling things; 「平和」 is peace in the broad sense. The antonyms 「強硬」「過激」「乱暴」 are the opposite: unyielding, extreme, or rough.

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

1. 行動こうどうなどが荒あらだたせずおだやかなこと。
2. 秘密裏ひみつり。