伸長・伸張・伸暢|しんちょうshinchou[0]heiban (flat)

Common
Which spelling to use
伸長伸長 is the most common form and the recommended default for beginners; use it when writing this meaning.
伸張伸張 is a less common kanji-only variant of 伸長. You may encounter it, but 伸長 is the safer choice for beginners.
伸暢伸暢 is a kanji-only form that is rarely used. Beginners should normally choose 伸長 instead.
Definitions
  1. noun, suru verb, transitive verb, intransitive verbexpansion; extension; elongation; stretching
Conjugation
Dictionary form伸長する(しんちょうする)
Polite (masu)伸長します(しんちょうします)
Negative (nai)伸長しない(しんちょうしない)
polite (masen)伸長しません(しんちょうしません)
classical zu / nu伸長せず・伸長せぬ(しんちょうせず・しんちょうせぬ)
Past (ta)伸長した(しんちょうした)
polite (mashita)伸長しました(しんちょうしました)
Past negative (nakatta)伸長しなかった(しんちょうしなかった)
polite (masen deshita)伸長しませんでした(しんちょうしませんでした)
Te form伸長して(しんちょうして)
Potential伸長できる(しんちょうできる)
Passive伸長される(しんちょうされる)
Causative伸長させる(しんちょうさせる)
Causative passive伸長させられる(しんちょうさせられる)
Conditional (ba)伸長すれば(しんちょうすれば)
tara伸長したら(しんちょうしたら)
Volitional伸長しよう(しんちょうしよう)
polite (mashou)伸長しましょう(しんちょうしましょう)
Imperative伸長しろ(しんちょうしろ)

Common forms generated by rule; see the senses for honorific or irregular usage.

Synonyms & antonyms
  • Synonym伸びるのびるNeutralThe everyday verb for getting longer or growing, and the most common choice. 「伸長」 is a written Sino-Japanese word used mainly for growth in influence or results.
  • Synonym伸ばすのばすNeutralThe transitive counterpart: making something longer or stretching it. 「伸長」 is the more written, formal option.
  • SynonymのびNeutralThe noun for the amount or degree of growth, as in 「売上の伸び」. 「伸長」 is the more written choice.
  • Synonym延長えんちょうNeutralExtends length or time, as in 「会期延長」. 「伸長」 stresses length and influence stretching outward and growing.
  • Synonym拡大かくだいNeutralEnlarges scale or scope. 「伸長」 focuses on growing longer and increasing rather than widening.
  • Synonym拡張かくちょうWrittenWritten word for extending range or functions, as in 「道路拡張」. 「伸長」 stresses growth.
  • Synonym成長せいちょうNeutralGrowth of living things or the economy. 「伸長」 stresses growing longer and increasing.
  • Synonym発展はってんNeutralDeveloping to a higher stage. 「伸長」 stresses growth in quantity or extent.
  • Synonym引き伸ばすひきのばすNeutralStretching something out, enlarging photos, or putting things off. 「伸長」 usually speaks of growth in length or influence.
  • Synonym引き伸ばしひきのばしNeutralNoun for stretching out, delaying, or photo enlargement. 「伸長」 refers to growth.
  • SynonymのすCasualColloquial and rarely used; mainly about gaining influence or pressing on further, rather than the everyday word for something growing longer.
  • Synonym伸展しんてんWrittenWritten language for extending power or scale; very close in sense to 「伸長」.
  • Related膨張ぼうちょうWrittenWritten word for swelling or expansion in volume. 「伸長」 concerns growth in length or influence.
  • Related生長せいちょうWrittenWritten word for plant growth. 「伸長」 is not limited to plants.
  • Related発達はったつNeutralDevelopment of mind, body or skills. 「伸長」 stresses growing longer.
  • Antonym収縮しゅうしゅくWrittenWritten word for objects or influence contracting and shrinking — the direct opposite of 「伸長」.
  • Antonym縮小しゅくしょうNeutralShrinks scale or scope — the opposite of the expansion and growth 「伸長」 describes.
  • Antonym短縮たんしゅくNeutralShortens time or distance — the opposite of the lengthening 「伸長」 describes.

In everyday speech use 「伸びる」 (get longer, grow) or 「伸ばす」 (make longer); 「伸長」 is a written word for growth in length, influence or results. For expanding scale pick 「拡大」, for extending time or length 「延長」, and for the opposite 「縮小」. 「伸び」 is the amount of growth, 「伸展」 and 「拡張」 are written words for extending power or range, and 「成長」「発展」「発達」 cover growth and development. 「引き伸ばす」 means stretching out or enlarging photos; 「収縮」 and 「短縮」 are the opposites for shrinking and shortening.

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

Japanese definitions
  1. 長ながさや力ちからが伸のびること。また、伸のばすこと。
Kanji in this word
See also

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