手伝い|てつだいtetsudai[3]nakadaka (mid-high)

1. nounhelper; assistant
   ４年間ねんかんは彼かれは最初さいしょの値段ねだんで芝しばを刈かってくれたが、その年としの終おわりに彼かれはしょっちゅう手伝てつだいを連つれていることに気きがついた。↗

   For four years, he cut the grass at the original price, but I noticed that toward the end of that year, he had a helper with him quite often.
2. nounhelp; assistance
   台所だいどころでお母かあさんの手伝てつだいをしていたの。↗

   I helped my mother in the kitchen.

• Synonymお手伝いおてつだいNeutralThe polite way to say 「手伝い」. Also a word for a hired domestic maid, as in 「お手伝いさん」.
• Synonym助手じょしゅNeutralAlso written 「助手」; more common when read 「じょしゅ」. Unlike 「手伝い」, which covers both the helper and the act of helping, this names only the person.
• SynonymアシスタントNeutralLoanword for an assistant, mostly in professional settings such as TV shows or a manga artist's studio. 「手伝い」 is general helping or a general helper.
• SynonymヘルパーNeutralLoanword mostly for a care worker or home helper, as in 「ホームヘルパー」. 「手伝い」 is broader, covering help of any kind.
• Synonym手助けてだすけNeutralLending a hand, as in 「手助けする」. Very close to 「手伝い」, but leans toward helping someone out of difficulty.
• Synonym助力じょりょくWrittenWritten word for giving strength or assistance. In daily speech, say 「手伝い」.
• Synonym助け手たすけてWrittenWritten-style word for a helper, someone who supports another person's work. In everyday speech say 「手伝い」 or 「助手」.
• Synonym手伝い手てつだいてNeutralA rare word for a person who helps with a task. In daily use, say 「手伝い」.
• Synonym補佐役ほさやくNeutralA role that supports the person mainly in charge of the work. 「手伝い」 is an ordinary, general helper.
• Synonym補助者ほじょしゃNeutralAn assistant or helper, leaning toward formal documents. In everyday speech, use 「手伝い」.
• Related補佐ほさNeutralAssisting a superior; a deputy. Mostly seen in job titles like 「課長補佐」. 「手伝い」 is general helping.
• Related助けたすけNeutralHelp or rescue in a broad sense — it can even mean saving a life. 「手伝い」 focuses on helping with work or tasks.
• Related援助えんじょNeutralHelp given to people or organizations in trouble — money, goods, manpower, expertise. 「手伝い」 is hands-on help with tasks.
• Related支援しえんNeutralGiving aid or backing; leans formal. 「手伝い」 is everyday, hands-on helping.
• Related応援おうえんNeutralCheering people on, or sending reinforcements. 「手伝い」 is physically helping with the work.
• Related補助ほじょNeutralSupplementing what is lacking; also subsidies, as in 「補助金」. 「手伝い」 leans toward helping with the work itself.
• Related助っ人すけっとCasualColloquial: a helper who comes to the rescue, or a hired foreign player. 「手伝い」 is more general.
• Related女房役にょうぼうやくNeutralOriginally a wife's role supporting her husband; figuratively a trusted right-hand assistant, or a baseball catcher. 「手伝い」 is a general helper.
• Related加勢かせいNeutralWritten word for lending a hand or sending reinforcements. In daily speech, say 「手伝い」.
• Related力添えちからぞえNeutralGiving help or support, often in the honorific 「お力添え」. 「手伝い」 is more casual.
• RelatedアシストNeutralLoanword for assistance; in soccer, the final pass leading to a goal. 「手伝い」 is general helping.
• Related補佐人ほさにんWrittenWritten word for someone who supports another person's work; in lawsuits it also means a legal aide. Everyday speech uses 「手伝い」.
• Related副手ふくしゅWrittenWritten and rare: a deputy or assistant. In everyday speech, say 「助手」.
• Related補助員ほじょいんNeutralAuxiliary staff, often as a job title. 「手伝い」 leans toward everyday helping.
• Antonym邪魔じゃまNeutralOpposite of 「手伝い」 on the help-vs-hinder scale: getting in the way, disturbing.
• Antonym妨害ぼうがいNeutralAlso opposite on the help-vs-hinder scale: deliberate obstruction or interference.

For everyday help with tasks or a helper, 「手伝い」 is the default; say 「お手伝い」 to be polite. For a professional assistant use 「アシスタント」, for a care worker 「ヘルパー」. Aid with money, goods or manpower is 「援助」 or 「支援」; cheering someone on is 「応援」. The rest are narrower or more formal: job-title roles like 「補佐」, written-style words like 「助力」, or special senses like 「アシスト」 in soccer. Opposites: 「邪魔」, 「妨害」.

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

1. 手伝てつだうこと。また、その人ひと。
2. こどもが親おやの家事かじなどを補佐ほさすること。
3. 「てつだう」の連用形れんようけい。