頭髪|とうはつtouhatsu[0]heiban (flat)

1. nounhair (on the head)
   ぐはっ！？俺おれの貴重きちょうな頭髪とうはつを、むしるな！↗

   O-oi!? Don't rip off my precious hair!

• SynonymヘアNeutralLoanword for hair, mostly in compounds like 「ヘアスタイル」 and 「ヘアカット」; also serves as a euphemism for pubic hair.
• Synonym髪かみNeutralThe most common everyday word, covering hair and hairstyle; 「頭髪」 is the written term of rules and regulations.
• Synonym髪の毛かみのけNeutralCommon in colloquial speech for hair on the head, whether the hair as a whole or a single strand.
• Synonym毛髪もうはつNeutralBlanket term for human body hair, as in 「毛髪検査」; medical and forensic language, broader than 「頭髪」.
• Related御髪おぐしFormalA polite, archaic honorific for hair, used of other people or respected figures.

For hair on the head, 「頭髪」 is the written, formal term seen in rules like 「頭髪検査」. In everyday speech pick 「髪」 or 「髪の毛」; use 「毛髪」 in medical or forensic contexts, 「ヘア」 in loanword compounds, and 「御髪」 as a polite, old-fashioned honorific.

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

1. 頭あたまの毛け、髪の毛かみのけ。