つま先（つまさき、tsumasaki）
- tiptoe

The word つま先つま先 refers to the tip of your toes. It is the part of your foot furthest from your ankle. It encompasses the end of each toe. It can also be used figuratively to refer to the very beginning or the forefront of something.

⚫︎つま先つま先をぶつけてしまった。 Translation: I stubbed my toe. ⚫︎バレエのレッスンで、つま先つま先を伸ばす。 Translation: Extend your toes in ballet class. ⚫︎そのプロジェクトは、つま先つま先まで詳細に計画されていた。 Translation: That project was planned in detail from start to finish.

This word is used to describe the physical part of the body, specifically the toes. It can be used in various contexts, such as describing an injury, an action, or even a figurative concept. In daily conversation, it's a common word, but it's important to differentiate it from other parts of the foot.

⚫︎The word is most commonly written in hiragana as つま先つま先. ⚫︎The kanji form is 爪先爪先, but it is less frequently used. The first character 爪 means "nail" or "claw." ⚫︎The okurigana (送りがな) - the trailing hiragana - is always "さき" (saki).

⚫︎ There aren't many direct synonyms for the physical part, but terms like "toes" in English are closest in meaning. ⚫︎ For the figurative usage (beginning/forefront), words like 最初 (saisho - beginning) or 先端 (sentan - tip/leading edge) could be considered.

⚫︎ For the physical aspect, there's no direct antonym, as it refers to a specific body part. ⚫︎ For the figurative meaning, the opposite might be 最後 (saigo - the end) or 後端 (kōtan - the back end).

階段で足を滑らせて、テーブルの角につま先つま先をぶつけてしまいました。 ・Translation: I slipped on the stairs and stubbed my toe on the corner of the table. ・Explanation: This sentence describes the physical action of hitting one's toes on something.

彼女はレースのつま先つま先に立ち、スタートラインに立った。 ・Translation: She stood on her toes at the beginning of the race, at the starting line. ・Explanation: This sentence describes the posture before a race, where she stands on her toes, implying alertness and readiness.

⚫︎ The word is a combination of 爪(tsume - nail/claw) and 先 (saki - tip/end). ⚫︎ While the character 爪 isn't typically used when writing つま先, it hints at the association with nails of the toes. ⚫︎ 先 indicates the "end" or "tip" of something, therefore meaning the end part of the toes.