Phrase guide

on the sly

adv · 2 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

adv

Meaning 1

Slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily.

Definition source: English Wiktionary via Wiktextract

Usage: idiomatic

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: clandestinely, furtively, on the down-low, on the quiet, on the Q.T.

Antonyms: none provided

2

adverb

Meaning 2

in a furtive manner

Definition source: Princeton WordNet 3.0

Examples

  • the soldiers were furtively crawling through the night

Meaning relationships

Synonyms: furtively

Antonyms: none provided

History

Etymology

No etymology was provided for this word.

Across languages

Translations

32 source translations are retained for this English entry.

  • Azerbaijani: əlaltından — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Azerbaijani: əlaltı — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Chinese Mandarin: 偷偷 (tōutōu) — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Chinese Mandarin: 悄悄 (qiāoqiāo) — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Dutch: in het geheim — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Finnish: vaivihkaa — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Finnish: salaa — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • French: en douce — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • French: à la dérobée — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • French: en cachette — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • French: à la sauvette — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Galician: ás agachadas — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • German: heimlich — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Hungarian: titokban — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Hungarian: lopva — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Hungarian: alattomban — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Hungarian: suttyomban — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Polish: ukradkiem — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Russian: втихаря́ (vtixarjá) — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Russian: исподтишка́ (ispodtišká) — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Russian: тайко́м (tajkóm) — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Russian: укра́дкой (ukrádkoj) — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Russian: потихо́ньку (potixónʹku) — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Russian: тихо́нько (tixónʹko) — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Spanish: de extranjis — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Spanish: de tapadillo — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Spanish: a escondidas — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Spanish: a escondidillas — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Spanish: a cencerros tapados — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Spanish: a lo zorro — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Spanish: caleta — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily
  • Swedish: i smyg — slyly, in an inconspicuous manner, so as not to be seen; secretly; stealthily