言い出す|いいだすiidasu[3]nakadaka (mid-high)

JLPT N2approx.Common
Definitions
  1. godan verb, transitive verbto begin to say; to start talking; to broach (a matter); to bring up; to come out with
    我々われわれが静しずかに夕食ゆうしょくをとっていると、突然とつぜん、母ははがもう一いち度ど学校がっこうに行いくつもりだと言いい出だした。↗
    We were having a quiet supper when out of the blue my mother announced she was going back to school.
  2. godan verb, transitive verbto be the first to say; to suggest (doing); to propose
    The manager suggested that I go with him to the airport.
Conjugation
Dictionary form言い出す(いいだす)
Polite (masu)言い出します(いいだします)
Negative (nai)言い出さない(いいださない)
polite (masen)言い出しません(いいだしません)
classical zu / nu言い出さず・言い出さぬ(いいださず・いいださぬ)
Past (ta)言い出した(いいだした)
polite (mashita)言い出しました(いいだしました)
Past negative (nakatta)言い出さなかった(いいださなかった)
polite (masen deshita)言い出しませんでした(いいだしませんでした)
Te form言い出して(いいだして)
Potential言い出せる(いいだせる)
Passive言い出される(いいだされる)
Causative言い出させる(いいださせる)
Causative passive言い出させられる(いいださせられる)
Conditional (ba)言い出せば(いいだせば)
tara言い出したら(いいだしたら)
Volitional言い出そう(いいだそう)
polite (mashou)言い出しましょう(いいだしましょう)
Imperative言い出せ(いいだせ)

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

Synonyms & antonyms
  • RelatedおっしゃるFormalHonorific for someone else saying something (「先生がおっしゃった」), used of superiors and clients; no sense of broaching a matter.
  • Related言ういうNeutralThe most basic verb for saying; 「言い出す」 adds the nuance of being the first to speak up and propose.
  • Related発言はつげんWrittenWritten/formal noun for making a statement (「会議で発言する」), typical of meetings and public occasions.
  • Related申すもうすFormalHumble language for saying or being called (「田中と申します」), used of yourself or people on your side.
  • Related話すはなすNeutralFor talking or conversing (「友達と話す」), with the focus on exchange between speakers rather than on raising a topic first.
  • Related言い表すいいあらわすNeutralFor expressing something in words (「言葉で言い表せない」); the point is how well it is put, not who speaks first.
  • RelatedしゃべるCasualColloquial for talking or chatting (「よくしゃべる人」); can also mean letting something slip.
  • Related申し上げるもうしあげるFormalHumble language that lifts the listener, for speaking to superiors or clients (「お礼申し上げます」); no sense of being the first to propose.
  • Related申し述べるもうしのべるFormalHumble language for stating something (「意見を申し述べる」), mostly in formal settings.
  • Related物言うものいうCasualColloquial for speaking or talking, often in 「物言う株主」; can also mean having an effect or carrying weight.
  • Related弁じるべんじるWrittenWritten-style verb for expounding or arguing (「一席弁じる」), with an oratorical flavor.
  • Related物申すものもうすWrittenWritten style, often in media headlines, for voicing an objection or protest (「政府に物申す」).
  • Related発語はつごWrittenWritten noun for the act of speaking or a word that opens a sentence; mostly in linguistics and medicine.

Use 「言い出す」 when someone is the first to speak up or start saying something, as in 「急に辞めると言い出した」. For simply saying, pick 「言う」; for conversing, 「話す」; for speaking in a meeting, 「発言」; and for addressing someone you must respect, 「申し上げる」.

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

Japanese definitions
  1. 言葉ことばに出だして言ゆう。
  2. 言いい始はじめる。
Kanji in this word
English equivalents

JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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