adj · adv · name · 8 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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/slaɪ/
Southern-England:Recorded audio is listed in the source snapshot.
rhymes with -aɪ
CMU ARPABET:S L AY1
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
adj
Meaning 1
Artfully cunning; secretly mischievous; wily.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
adj
Meaning 2
Dexterous in performing an action, so as to escape notice
Definition source: English Wiktionary via Wiktextract
Qualifier: having a positive connotation
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: nimble, skillful, cautious, shrewd
Antonyms: none provided
3
adj
Meaning 3
Done with, and marked by, artful and dexterous secrecy; subtle
Definition source: English Wiktionary via Wiktextract
Examples
a sly trick
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
adj
Meaning 4
Light or delicate; slight; thin.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
adv
Meaning 5
Slyly.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
name
Meaning 6
A diminutive of the male given name Sylvester.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
7
name
Meaning 7
A surname
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
From Middle English sly, sley, sleigh, sleiȝ, from Old Norse slǿgr (“sly, cunning”, literally “capable of hitting or striking”), from Proto-Germanic *slōgiz (“lively, agile, cunning, sly, striking”), from Proto-Indo-European *slak- (“to hit, throw”). Cognate with Icelandic slægur (“crafty, sly”), Norwegian Nynorsk sløg (“sly”). Related to sleight, slay. In all likelihood, however, unrelated with Saterland Frisian slau (“sly, crafty”), Dutch sluw (“sly, cunning”), Low German slu (“sly, cunning”), German schlau (“clever, crafty”). Doublet of sleight and slöjd
Across languages
Translations
103 source translations are retained for this English entry.