伴ともなう

と

も

な

う

Common wordJLPTN2Freq.FrequencyTop 5,000

伴う · godan verb (-u)

Form	Positive	Negative
Dictionary	伴ともなう	伴ともなわない
Polite	伴ともないます	伴ともないません
Past polite	伴ともないました	伴ともないませんでした
Past	伴ともなった	伴ともなわなかった
Te-form	伴ともなって	伴ともなわないで
Desire	伴ともないたい	伴ともないたくない
Potential	伴ともなえる	伴ともなえない
Passive	伴ともなわれる	伴ともなわれない
Causative	伴ともなわせる	伴ともなわせない
Causative passive	伴ともなわせられるalso 伴ともなわされる	伴ともなわせられないalso 伴ともなわされない
Volitional	伴ともなおう
Polite volitional	伴ともないましょう
Imperative	伴ともなえ	伴ともなうな
Conditional	伴ともなえば	伴ともなわなければ
Tara conditional	伴ともなったら	伴ともなわなかったら

Meanings

godan verb (-u), intransitive verb

accompany; go with; be consequent upon

Intransitive use, typically with 〜に. Describes something occurring together with or as a result of something else.

高こう齢れい化かに伴ともなう医い療りょう費ひの増ぞう加かが問もん題だいになっている。
The increase in medical costs accompanying the aging population has become a problem.
地じ震しんに伴ともなって津つ波なみが発はっ生せいした。
A tsunami occurred as a consequence of the earthquake.

godan verb (-u), transitive verb

be accompanied by; bring with; involve

Transitive use, typically with 〜を. Indicates that something entails, involves, or brings something else along.

この仕し事ごとは危き険けんを伴ともなう。
This job involves danger.
改かい革かくには痛いたみを伴ともなう。
Reform brings pain with it.

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Usage patterns

〈事こと〉にはリスクが伴ともなうrisk accompanies a given undertaking; there is risk involved
新あたらしい事じ業ぎょうには常つねにリスクが伴ともなう。
Starting a new business always involves risk.
〈事こと〉を伴ともなうto involve or bring with it (a certain condition, effect, etc.)
この治ち療りょうは激はげしい痛いたみを伴ともなう。
This treatment involves severe pain.
〈人ひと〉を伴ともなって〈場ば所しょ〉へ行いくto go somewhere accompanied by someone
彼かれは家か族ぞくを伴ともなってアメリカへ移い住じゅうした。
He emigrated to America accompanied by his family.

Expressions

に伴ともないas; with; due to; because of

Kanji

伴consort, accompany, bring with

Transitive / intransitive

伴う itself is used both intransitively with に (something occurring together with or as a result of something else, e.g. 事故に伴い、電車が遅れた 'Due to the accident, the train was delayed') and transitively with を (something entailing or bringing along another thing, e.g. この仕事は危険を伴う 'This job involves danger').

Related words· 6

連つれるN4sense 2
連れる is used for physically taking a person or animal along, while 伴う is more abstract, often describing accompanying phenomena or consequences.
付ふ随ずい sense 1
付随する is a formal, written term for something being attached or incidental to something else, whereas 伴う is broader and used in both spoken and written Japanese.
携たずさえるN1
伴う describes being accompanied by someone (often as a natural consequence or in formal contexts), while 携える stresses the deliberate act of bringing that person along.
ついてくるN3
伴う is a formal word for abstract things that accompany or result from something, while 付いてくる is more colloquial and can also describe physical following.

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ついていくN3
伴う is a more formal, literary word for accompanying someone or something, whereas ついて行く is the everyday, conversational verb for following along.
添そえるN2
伴う means to be accompanied by or to entail something, often abstract, while 添える means to actively add a person or item to accompany another.

Don't confuse with

従したがうN3sense 1
従う means to obey or follow a rule or person, while 伴う means to accompany or occur together with something; the kanji and general 'go along with' feel can make learners mix them up.

Word family

伴ともない
companion; accompaniment
相あい伴ともなう
accompany; go together with

Written forms

伴ともなうUsage83%
Standard kanji spelling.
ともなうUsage17%
伴ともなうUsage<1%
irregular okurigana
Irregular okurigana usage; rarely seen.

Etymology

Compound of とも (together) and なう (an old verb meaning 'to become' or 'to accompany'). The exact derivation of なう is uncertain, but the combination has long expressed the idea of going together with something.