不服|ふふくfufuku[0]heiban (flat)

1. noun, na-adjectivedissatisfaction; discontent; disapproval; objection; complaint; protest; disagreement
   彼かれは不服ふふくそうに口くちをとがらせた。↗

   He pouted with dissatisfaction.

• Synonym不平ふへいNeutralA feeling of being wronged or hard done by, as in 「不平を言う」; 「不服」 leans toward objecting to a decision, ruling or penalty.
• Synonym不満ふまんNeutralEveryday dissatisfaction — the most common word of the group and broader in range than 「不服」, whose focus is on decisions and rulings.
• SynonymクレームNeutralA loanword for a complaint or claim for compensation, as in 「クレームをつける」; typically lodged with a shop or company.
• Synonym異存いぞんWrittenA formal word for an objection or dissent, often found in the negative 「異存はない」.
• Synonym苦情くじょうNeutralA complaint or protest over actual inconvenience or harm, aimed at organizations or individuals, as in 「隣人から苦情が来る」.
• Synonym不満足ふまんぞくWrittenWritten-style dissatisfaction at expectations left unmet; closer to 不満 than to the defiant 不服.
• RelatedクレームNeutralA loanword for a complaint or claim for compensation, as in 「クレームをつける」; typically lodged with a shop or company.
• Related非難ひなんNeutralCriticizing or censuring another person; the focus is on their faults, not on your own refusal to accept a ruling.
• Related難色なんしょくWrittenWritten-style disapproval, as in 「難色を示す」, which can come through in attitude or in words; it signals reluctance to agree.
• Related文句もんくNeutralGrumbling or complaints, as in 「文句を言う」; the everyday spoken word, where 不服 would sound stiff.
• Related恨みうらみNeutralResentment or a grudge held against someone; a heavier emotion than 不服, which is mere unwillingness to accept a decision.
• Related不同意ふどういWrittenFormal disagreement, the counterpart of 「同意」; in daily conversation people simply say 「同意しない」.
• Related慨嘆がいたんWrittenWritten-style lamentation over the state of the world; the stress is on sighing at how things are, not on defying a decision.
• Related恨み言うらみごとNeutralResentful words actually spoken aloud; 不服 is the feeling, this is the grumbling it produces.
• Related不賛成ふさんせいWrittenFormal disapproval of an opinion or plan, as in 「その案には不賛成だ」; unlike 不服 it need not imply resentment.
• Related不承ふしょうWrittenA written-style word for withholding consent, now rare; in daily life say 「同意しない」 or 「賛成できない」.
• Related不承知ふしょうちWrittenWritten-style refusal to accept or agree; the emphasis falls on turning down a request rather than resenting a decision.
• Related不承認ふしょうにんWrittenOfficial non-approval, at home in bureaucratic prose; it describes the outcome of an approval process, not a feeling of defiance.
• RelatedぼやきCasualColloquial muttering of complaints, tinged with resignation; far more casual than 不服.
• Related怨言えんげんWrittenA written word for words of resentment, rarely heard today; in everyday speech 「恨み言」 is used instead.
• Antonym服従ふくじゅうWrittenObedience, as in 「命令に服従」; the direct opposite of 不服, which is the refusal to submit.
• Antonym承諾しょうだくWrittenConsent to or acceptance of a request, as in 「承諾を得る」; the opposite pole to 不服.
• Antonym同意どういNeutralAgreement or consent, as in 「同意書」; the neutral opposite of 不服.

Use 「不服」 for refusing to accept a decision or ruling, as in 「判決に不服を申し立てる」. For plain dissatisfaction pick 「不満」, for feeling wronged 「不平」, for grumbling 「文句」. Complain to a business with 「クレーム」 or 「苦情」. 「非難」 blames another's faults, 「恨み」 is a grudge, 「ぼやき」 is casual muttering. For formal disagreement use 「不同意」「不賛成」「異存」, or the rare written 「不承」; 「怨言」 is a rare written word for resentful words, and 「不承認」 is official non-approval. The opposites are 「服従」, 「承諾」 and 「同意」.

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

1. 納得なっとくできず、不満ふまんであること。
2. 服従ふくじゅうしないこと。服従ふくじゅうしない人々ひとびと。