推量|すいりょうsuiryou[0]heiban (flat)
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- noun, suru verb, transitive verbguess; conjecture; supposition; inference
Conjugation
| Dictionary form | 推量する(すいりょうする) |
|---|---|
| Polite (masu) | 推量します(すいりょうします) |
| Negative (nai) | 推量しない(すいりょうしない) |
| polite (masen) | 推量しません(すいりょうしません) |
| classical zu / nu | 推量せず・推量せぬ(すいりょうせず・すいりょうせぬ) |
| Past (ta) | 推量した(すいりょうした) |
| polite (mashita) | 推量しました(すいりょうしました) |
| Past negative (nakatta) | 推量しなかった(すいりょうしなかった) |
| polite (masen deshita) | 推量しませんでした(すいりょうしませんでした) |
| Te form | 推量して(すいりょうして) |
| Potential | 推量できる(すいりょうできる) |
| Passive | 推量される(すいりょうされる) |
| Causative | 推量させる(すいりょうさせる) |
| Causative passive | 推量させられる(すいりょうさせられる) |
| Conditional (ba) | 推量すれば(すいりょうすれば) |
| tara | 推量したら(すいりょうしたら) |
| Volitional | 推量しよう(すいりょうしよう) |
| polite (mashou) | 推量しましょう(すいりょうしましょう) |
| Imperative | 推量しろ(すいりょうしろ) |
Common forms generated by rule; see the senses for honorific or irregular usage.
- Synonym憶測おくそくNeutralGuessing on uncertain or flimsy grounds, often with a negative shade, as in 「憶測が飛び交う」; 推量 is neutral conjecture and also a grammar term.
- Synonym推測すいそくNeutralThe everyday word for inferring from what is known; the most common choice in speech and news, as in 「推測にすぎない」.
- Synonym推察すいさつNeutralSurmising the course of events, causes, or another's feelings, as in 「ご推察の通り」; more deferential than the general conjecture of 推量.
- Synonym推論すいろんNeutralDrawing a conclusion by logical steps; academic in flavor, as in 「推論を立てる」, unlike the looser conjecture of 推量.
- Synonym推定すいていNeutralConcluding from surrounding circumstances that something is true, as in 「推定年齢」 and 「無罪推定」; 推量 is mere guesswork.
- Synonym忖度そんたくNeutralReading another person's mind or true intent; nowadays often implies sizing up a superior to please them, with a negative shade.
- Synonym見当けんとうNeutralA rough estimate or guess, as in 「見当がつかない」; very common in speech.
- Synonym推理すいりNeutralReasoning something out logically; also the word for the mystery genre, as in 「推理小説」.
- Synonym予測よそくNeutralPredicting what has not yet happened, as in 「天気予測」; focused on the future.
- Synonym推し量るおしはかるNeutralThe native-Japanese verb for surmising or conjecturing, as in 「心中を推し量る」.
- Synonym推考すいこうWrittenWritten-style word for thinking something over by conjecture; rare, so say 「推測」 in everyday speech.
- Synonym臆度おくたくWrittenSubjective guesswork without solid grounds; a written, old-fashioned word close to 「憶測」.
- Synonym推断すいだんWrittenReaching a judgment through reasoning; leans toward written prose, as in 「〜と推断される」.
- Related予断よだんNeutralA judgment made in advance of the facts; used mostly in 「予断を許さない」.
- Related決め込むきめこむNeutralTo take for granted and assume on one's own authority; also to pretend, as in 「知らん顔を決め込む」.
- Related想定そうていNeutralAssuming a situation or condition in advance, as in 「想定外」; common in business and disaster planning.
- Related類推るいすいNeutralInferring by analogy from a similar case, as in 「類推で意味を考える」.
- Related推算すいさんNeutralCalculating a numerical figure from data, as in 「人口を推算する」.
- Related揣摩しまWrittenOld-fashioned written word for surmising, not used in daily speech; seen mostly in 「揣摩憶測」.
- Antonym確信かくしんNeutralFirm conviction with no doubt — the opposite of uncertain conjecture, as in 「確信を持つ」.
- Antonym断定だんていNeutralStating a conclusion definitively; the opposite of merely conjecturing, as in 「断定はできない」.
Everyday conjecture is 「推測」; 「推量」 itself is the grammatical term for conjectural forms like 「〜だろう」. Reach for 「推察」 when deferentially surmising another's feelings, 「憶測」 for guesswork on shaky grounds, 「推定」 for conclusions drawn from circumstances, 「推論」 or 「推理」 for logical reasoning, 「予測」 for the future, and 「見当」 for rough estimates. 「確信」 and 「断定」 are the opposites: certainty and definitive judgment.
Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only


