Phrase guide

know inside and out

verb · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

verb

Meaning 1

To know (something or someone) very thoroughly.

Definition source: English Wiktionary via Wiktextract

Usage: idiomatic, transitive

Examples

  • He's still new to their system, but he knows databases inside and out and will understand the rest soon.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Across languages

Translations

12 source translations are retained for this English entry.

  • Danish: kende ind og ud — know (something) very thoroughly
  • Finnish: tuntea läpikotaisin — know (something) very thoroughly
  • French: connaître sur le bout des doigts — know (something) very thoroughly
  • German: etwas in- und auswendig kennen — know (something) very thoroughly
  • German: etwas wie die eigene Westentasche kennen — know (something) very thoroughly
  • Polish: znać jak własną kieszeń — know (something) very thoroughly
  • Polish: znać od podszewki — know (something) very thoroughly
  • Russian: знать назубо́к (znatʹ nazubók) — know (something) very thoroughly
  • Russian: знать вдоль и поперёк (znatʹ vdolʹ i poperjók) — know (something) very thoroughly
  • Spanish: conocerlo como si lo hubiera parido — know (something) very thoroughly
  • Swedish: känna/kunna något utan och innan — know (something) very thoroughly
  • Zazaki: teberi u zeri zanayen — know (something) very thoroughly