憶測・臆測|おくそくokusoku[0]heiban (flat)

Common
Which spelling to use
憶測憶測 is the most common written form and the recommended choice for beginners; use it when writing this word.
臆測臆測 is a kanji-only variant that is rarely used, so learners will seldom encounter it and generally need not choose it for writing.
Definitions
  1. noun, suru verb, transitive verbguess; speculation; supposition
Conjugation
Dictionary form憶測する(おくそくする)
Polite (masu)憶測します(おくそくします)
Negative (nai)憶測しない(おくそくしない)
polite (masen)憶測しません(おくそくしません)
classical zu / nu憶測せず・憶測せぬ(おくそくせず・おくそくせぬ)
Past (ta)憶測した(おくそくした)
polite (mashita)憶測しました(おくそくしました)
Past negative (nakatta)憶測しなかった(おくそくしなかった)
polite (masen deshita)憶測しませんでした(おくそくしませんでした)
Te form憶測して(おくそくして)
Potential憶測できる(おくそくできる)
Passive憶測される(おくそくされる)
Causative憶測させる(おくそくさせる)
Causative passive憶測させられる(おくそくさせられる)
Conditional (ba)憶測すれば(おくそくすれば)
tara憶測したら(おくそくしたら)
Volitional憶測しよう(おくそくしよう)
polite (mashou)憶測しましょう(おくそくしましょう)
Imperative憶測しろ(おくそくしろ)

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

Synonyms & antonyms
  • Synonym推測すいそくNeutralNeutral: to infer from available clues. 「憶測」 stresses guessing from unreliable, imagined grounds and often carries a negative shade.
  • Synonym推量すいりょうWrittenWritten/formal: guessing or supposing; in grammar it also covers conjecture expressed with 「う」「らしい」. 「憶測」 stresses unreliable grounds.
  • Synonym推察すいさつWrittenWritten/formal: surmising how something happened, its cause, or another's feelings, as in 「ご推察の通り」. 「憶測」 stresses unreliable grounds.
  • Synonym忖度そんたくWrittenWritten/formal: reading another's mind, or anticipating and deferring to a superior's wishes. 「憶測」 is about wildly guessing at matters.
  • Synonym類推るいすいWrittenWritten/formal: reasoning by analogy from points of resemblance. 「憶測」 rests on unreliable grounds.
  • Synonym臆度おくたくWrittenWritten but rare: conjecture lacking solid grounds; in everyday use, say 「憶測」.
  • Related察しさっしNeutralNeutral: sensing or reading a situation or someone's feelings, as in 「お察しします」. 「憶測」 stresses guessing from unreliable grounds.
  • Related想像そうぞうNeutralNeutral: imagination — picturing things in the mind, not necessarily guessing at facts. 「憶測」 leans toward guessing at the truth.
  • Related推論すいろんWrittenWritten/formal: logical inference from facts. 「憶測」 rests on unreliable grounds.
  • Related推定すいていWrittenWritten/formal: presuming from circumstances, notably in legal use. 「憶測」 rests on unreliable grounds.
  • Related仮定かていWrittenWritten/formal: an assumption taken as a premise, regardless of fact. 「憶測」 is guessing.
  • Related見当けんとうNeutralNeutral: a rough estimate, as in 「見当がつかない」. 「憶測」 stresses guessing from unreliable grounds.
  • Related想定そうていWrittenWritten/formal: positing a situation or scenario. 「憶測」 leans toward guessing at the truth.
  • Related予測よそくNeutralNeutral: predicting things still to come, as in 「需要予測」. 「憶測」 usually targets the present state or the truth.
  • Related揣摩臆測しまおくそくWrittenWritten four-character compound: letting the imagination run wild in baseless conjecture. 「憶測」 is more concise.
  • Related当て推量あてずいりょうNeutralNeutral: blind guessing with no solid grounds. 「憶測」 is the more literary word.
  • Related憶説おくせつWrittenWritten/formal: an opinion put forward on conjecture. 「憶測」 is the act of guessing itself.
  • Related憶断おくだんWrittenWritten/formal: jumping to a conclusion on conjecture. 「憶測」 is the guessing itself.
  • Related揣摩しまWrittenWritten/formal: fathoming or surmising. 「憶測」 is more common.
  • Related当てずっぽうあてずっぽうCasualColloquial: a wild, random guess. 「憶測」 is the more literary word.
  • Related推考すいこうWrittenWritten but rare: thinking something through by surmise. 「憶測」 is more common.
  • Related推知すいちWrittenWritten/formal: coming to know something by inference. 「憶測」 stresses guessing from unreliable grounds.
  • Related臆見おっけんWrittenWritten/formal: a view held without solid grounds. 「憶測」 is more common.
  • Related想察そうさつWrittenWritten/formal: surmising another person's feelings or a situation. 「憶測」 leans toward guessing at facts.
  • Antonym事実じじつNeutralNeutral: what actually happened or is true — the opposite of 「憶測」, which is arrived at by guessing.

Use 「憶測」 for guessing on unreliable grounds, as in 「憶測を呼ぶ」 or 「憶測が飛び交う」; pick 「推測」 to infer from clues, 「推察」 to read into matters or feelings, 「当てずっぽう」 for a wild guess, and 「事実」 for the opposite, fact.

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

Japanese definitions
  1. 不確ふたしかな根拠こんきょをもとに推測すいそくすること。
  2. 不確ふたしかな根拠こんきょをもとに推測すいそくする。
Kanji in this word
English equivalents
See also

Say it right, write it right

Core lookup works fully offline, with cloud pronunciation and one-tap save & review. Free, no sign-up.

Free downloadWindowsFree downloadmacOSDownload on the App StoreGet it on Google Play
MobileiOS / Android

Android

QR code for the Google Play pageGet it on Google Play

Scan it with your Android phone to install, or search for “Tomoshi” on Google Play.

iOS

QR code for the App Store pageDownload on the App Store

Scan it with your iPhone camera to install, or search for “Tomoshi” in the App Store.

Install the browser extensionLook words up on any web page · Chrome / Edge / Safari

Screenshot of a Tomoshi lookup resultScreenshot of Tomoshi lookup results on a phone

Windows macOS Chrome / Edge / Safari extension iOS / Android