加勢|かせいkasei[0]heiban (flat)

1. noun, suru verb, intransitive verbassistance; backing; reinforcements

• Synonym助力じょりょくWrittenWritten/formal prose. Broadly lending help or support, as to a project or research; 「加勢」 usually means turning up on the spot to add manpower or reinforcements.
• Synonym力添えちからぞえNeutralNeutral. Often heard as 「お力添え」 in requests or thanks, with a polite, courteous tone; 「加勢」 is blunter, about pitching in on the spot.
• SynonymサポートNeutralNeutral. A loanword for support and backing, common in customer or technical support; 「加勢」 means personally pitching in on the spot.
• Synonym応援おうえんNeutralNeutral. Can mean sending reinforcements, which is close to 「加勢」; 「応援」 also covers cheering people on and is used far more widely.
• Synonym肩入れかたいれNeutralNeutral. Backing or favoring one side, stressing where you stand and the care you show; 「加勢」 stresses actually pitching in.
• Synonym助けたすけNeutralNeutral. A noun covering help and rescue broadly, also a helper or something that helps; 「加勢」 specifically means reinforcing with extra hands.
• Synonym援護えんごWrittenWritten/formal prose. Supporting while protecting, including military cover as in 「援護射撃」; 「加勢」 is simply helping out, with no sense of protection.
• Synonym加担かたんNeutralNeutral. Joining a side and lending effort, very often with a bad cause—complicity; 「加勢」 is generally not derogatory.
• Synonym助勢じょせいWrittenWritten/formal prose. Close in sense to 「加勢」—lending force, reinforcing—but rarely used; everyday speech prefers 「加勢」 or 「応援」.
• Related助けるたすけるNeutralNeutral. The most all-purpose verb, covering rescue, helping out and financial support; 「加勢」 only means helping on the spot or reinforcing.
• Related補助ほじょNeutralNeutral. Supplementary help filling a shortfall, also subsidies and grants; 「加勢」 stresses joining a side to add force, not making up for what is lacking.
• Related補佐ほさWrittenWritten/formal prose. Assisting someone at their side in their work, or the post itself; 「加勢」 is temporary reinforcement, with no senior-junior relationship.
• Related援助えんじょWrittenWritten/formal prose. Mostly giving goods or money to people or groups in need, as in 「経済援助」; 「加勢」 means pitching in with your own effort.
• Related支援しえんNeutralNeutral. A common modern word for support in goods, manpower or know-how, with a wide range of recipients; 「加勢」 is about adding strength to one side as events unfold.
• Relatedお手伝いおてつだいCasualColloquial. Helping with tasks in a warm tone; also a maid. Housework help can be 「加勢」, but daily speech says 「お手伝い」; 「加勢」 stresses adding hands and effort.
• Related助成じょせいWrittenWritten/formal prose. Mostly funding of projects by government or public bodies, as in 「助成金」; 「加勢」 means joining a side to help by any means, not institutional funding.
• Related手助けてだすけNeutralNeutral. An everyday word for giving a hand with work; 「加勢」 mostly means adding manpower, and fits both fights and physical labor.
• Related介添えかいぞえNeutralNeutral. Attending at someone's side to look after them, e.g. caring for the sick or wedding attendants; 「加勢」 is reinforcement and implies no caretaking.
• RelatedアシストNeutralNeutral. A loanword for assistance; in sports it specifically means an assist. 「加勢」 is a Sino-Japanese word for broadly helping out or reinforcing.
• Related手伝いてつだいNeutralNeutral. A noun for helping or a helper, the most common everyday choice, mostly for helping with tasks; 「加勢」 leans toward adding strength, lending a hand.
• Related協賛きょうさんWrittenWritten/formal prose. Approving of and backing an event or project, typically companies sponsoring it with money; 「加勢」 is pitching in yourself.
• Related手伝うてつだうNeutralNeutral. The everyday verb, most common for helping someone with a task; 「加勢」 is a noun and suru-verb, leans written, and stresses adding strength.
• Related輔翼ほよくWrittenWritten/formal prose. A very rare literary word for assisting or backing someone; everyday speech uses 「補佐」 or 「手助け」, and even 「加勢」 is more common.
• Related幇助ほうじょWrittenWritten/formal prose. Mostly legal: making a crime easier to commit, as in 「自殺幇助」; 「加勢」 is ordinary helping with no criminal sense built into the word.
• Antonym妨害ぼうがいNeutralNeutral, and an antonym. Obstructing something from getting done, the opposite of helping with 「加勢」; often in formal contexts, as in 「業務妨害」.
• Antonym邪魔じゃまCasualColloquial, and an antonym. Everyday word for getting in the way, the opposite of helping with 「加勢」; also used for disturbing someone or dropping by.

For everyday helping, reach for 「手伝う」 or 「助ける」; for organized backing, 「支援」 or 「応援」. 「加勢」 itself is for throwing your strength behind a side as things happen, adding hands or reinforcements. Polite requests take 「お力添え」; written or formal contexts take 「助力」「援助」「補佐」; legal aiding of a crime is 「幇助」, and institutional funding is 「助成」. For services and sports, 「サポート」 and 「アシスト」. Joining in something bad is 「加担」. The opposites are 「邪魔」 in casual speech and 「妨害」 in formal use.

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

1. 助力じょりょくすること。