一筋・一条・ひと筋・一すじ・ひと条|ひとすじhitosuji[2]nakadaka (mid-high)
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- nounone line; one stretch (e.g. of road); one strand (e.g. of hair); one beam (e.g. of light); one ray; one length (e.g. of rope)
- na-adjective, noun (suffix)earnest; resolute; intent; devoted; single-minded
- nounone bloodline; one clan
- na-adjectiveordinary; common
Conjugation
| Plain form | 一筋(ひとすじ) |
|---|---|
| Polite (desu) | 一筋です(ひとすじです) |
| Negative (dewa nai) | 一筋ではない(ひとすじではない) |
| polite (dewa arimasen) | 一筋ではありません(ひとすじではありません) |
| Past (datta) | 一筋だった(ひとすじだった) |
| Past negative (dewa nakatta) | 一筋ではなかった(ひとすじではなかった) |
| Te form (de) | 一筋で(ひとすじで) |
| Adverbial (ni) | 一筋に(ひとすじに) |
| Conditional (nara) | 一筋なら(ひとすじなら) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- SynonymひたすらNeutralAn adverb for doing nothing but one thing, as in 「ひたすら謝る」; 「一筋」 works as a noun or suffix, as in 「仕事一筋」.
- Synonym一途いちずNeutralSingle-minded devotion, often with a headstrong, obstinate nuance; 「一筋」 is more neutral.
- Related真面目まじめNeutralMeans serious and proper, with a broad range of uses; 「一筋」 stresses staying devoted to one thing throughout.
- Related本気ほんきNeutralRefers to getting serious and meaning it, as in 「本気を出す」; 「一筋」 stresses long-term single-mindedness.
- Related真摯しんしWrittenWritten/formal word for a sincere, earnest attitude; 「一筋」 stresses long-term single-mindedness.
- Related真剣しんけんNeutralRefers to taking something seriously, as in 「真剣に考える」; 「一筋」 stresses long-term single-mindedness.
- Related一途いちずNeutralSingle-minded devotion, often with a headstrong, obstinate nuance; 「一筋」 is more neutral.
- RelatedシリアスNeutralLoanword meaning grave or serious; 「一筋」 stresses single-minded devotion.
- Related熱心ねっしんNeutralMeans enthusiastic and hard-working; 「一筋」 stresses long-term devotion to one thing.
- Related一生懸命いっしょうけんめいNeutralMeans doing your utmost, sparing no effort; 「一筋」 stresses long-term single-mindedness.
- Related懸命けんめいNeutralMeans straining with all one's effort, as in 「懸命な努力」; 「一筋」 stresses long-term single-mindedness.
- RelatedひたむきNeutralDescribes throwing yourself wholeheartedly into something; 「一筋」 stresses doing only one thing.
- Related生真面目きまじめNeutralMeans overly serious and inflexible; 「一筋」 stresses single-minded devotion.
- Related摯実しじつWrittenWritten/formal and rare; means sincere and honest. In everyday speech 「真摯」 is used instead.
- RelatedひたぶるWrittenWritten, old-fashioned word for single-minded persistence; rare today — say 「ひたすら」 instead.
- Related熱誠ねっせいWrittenWritten/formal word for heartfelt, earnest commitment; stresses an earnest attitude, while 「一筋」 stresses lasting devotion to one thing.
Use 「一筋」 for wholehearted devotion to one thing, as in 「仕事一筋」; it also means a single thin line or strand, as in 「一筋の光」. For single-minded devotion with a headstrong edge use 「一途」; for going all out use 「ひたむき」 or 「一生懸命」.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only
- 細長いもの。一本。ひとすじ。
- ひとくだり。


