熟知|じゅくちjukuchi[1]atamadaka (head-high)

Common
Definitions
  1. noun, suru verb, transitive verbbeing familiar with; having a thorough knowledge of; being well-informed about
Conjugation
Dictionary form熟知する(じゅくちする)
Polite (masu)熟知します(じゅくちします)
Negative (nai)熟知しない(じゅくちしない)
polite (masen)熟知しません(じゅくちしません)
classical zu / nu熟知せず・熟知せぬ(じゅくちせず・じゅくちせぬ)
Past (ta)熟知した(じゅくちした)
polite (mashita)熟知しました(じゅくちしました)
Past negative (nakatta)熟知しなかった(じゅくちしなかった)
polite (masen deshita)熟知しませんでした(じゅくちしませんでした)
Te form熟知して(じゅくちして)
Potential熟知できる(じゅくちできる)
Passive熟知される(じゅくちされる)
Causative熟知させる(じゅくちさせる)
Causative passive熟知させられる(じゅくちさせられる)
Conditional (ba)熟知すれば(じゅくちすれば)
tara熟知したら(じゅくちしたら)
Volitional熟知しよう(じゅくちしよう)
polite (mashou)熟知しましょう(じゅくちしましょう)
Imperative熟知しろ(じゅくちしろ)

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

Synonyms & antonyms
  • Synonym精通せいつうWrittenWritten/formal prose. Used for mastering an art or field of learning, stressing deep command; 「熟知」 stresses knowing a situation or thing very well.
  • Antonym無知むちNeutralNeutral. Means ignorance, the opposite of 「熟知」, which suggests knowing something as thoroughly as if it were the palm of your hand.

Use 「熟知」 for knowing a situation or person very well, as in 「現場を熟知している」; use 「精通」 for mastering a skill or field of study; 「無知」 is the opposite, meaning ignorance.

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

Japanese definitions
  1. ある物事ものごとについて詳くわしく知しること。
  2. 詳くわしく知しる。
Kanji in this word

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