厄介|やっかいyakkai[1]atamadaka (head-high)

1. na-adjective, nountrouble; burden; nuisance; bother; worry
   そんなことをするとやっかいなことを招まねくことになる。↗

   To do so is asking for trouble.
2. na-adjective, nouncare; dependence; support; kindness; obligation; staying (with a person)

• Synonym面倒めんどうNeutralEveryday word for something troublesome; also caring for someone, as in 「面倒を見る」. 「厄介」 is stronger: tricky, thorny, a burden, and it can mean living under someone's care.
• Synonym迷惑めいわくNeutralFocuses on causing trouble or inconvenience to others, as in 「迷惑をかける」; 「厄介」 describes the matter itself as tricky.
• SynonymトラブルNeutralLoanword for disputes, quarrels and mechanical breakdowns; 「厄介」 describes a situation as tricky to deal with.
• Synonym困難こんなんNeutralObjective difficulty, something hard to achieve; 「厄介」 adds an emotional sense of the thing being a nuisance.
• Synonym手数てすうNeutralThe effort or bother one goes to, mostly in 「手数をかける」; 「厄介」 stresses that something is hard to handle.
• Synonym難しいむずかしいNeutralAn adjective for something difficult or complicated; 「厄介」 focuses on the hassle and awkwardness involved.
• SynonymめんどくさいCasualColloquial for not wanting to be bothered, feeling too lazy to do something; 「厄介」 describes the thing itself.
• Synonymお手数おてすうFormalHonorific for the trouble you cause someone, as in 「お手数をおかけします」.
• Related煩雑はんざつWrittenWritten/formal word for procedures being complicated and cumbersome, as in 「煩雑な手続き」; 「厄介」 is more colloquial.
• Related支障ししょうNeutralAn obstacle that hinders progress, as in 「業務に支障をきたす」; 「厄介」 is the subjective feeling that something is a hassle.
• Relatedご苦労ごくろうFormalHonorific for someone's hard work, mostly to thank a subordinate, as in 「ご苦労さま」; close to 「厄介」 only in the sense of trouble.
• Relatedご迷惑ごめいわくFormalPolite form of 「迷惑」, used chiefly in apologies such as 「ご迷惑をおかけしました」.
• Antonym簡単かんたんNeutralAntonym on the easy–difficult axis: simple and uncomplicated, the opposite of 「厄介」.
• Antonym容易よういWrittenWritten word for easy, the opposite of 「厄介」 in degree of difficulty, and more formal than 「簡単」.
• Antonym手軽てがるNeutralAntonym on the effort axis: quick and easy because it takes no time or trouble.

Default to 「厄介」 for something tricky, thorny and a burden to deal with. For everyday hassle use 「面倒」; for trouble you cause someone else, 「迷惑」; when you can't be bothered, 「面倒くさい」. In polite speech, 「お手数」 and 「ご迷惑」. 「支障」 is about hindering progress, 「トラブル」 disputes or breakdowns, 「困難」 objective difficulty; the antonyms are 「簡単」, 「容易」 and 「手軽」.

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

1. 手間てまのかかる様子ようす。
2. 世話せわ。