Definitions
American Heritage® Dictionary of the English Language, Fourth Edition
- adj. So slight as to be difficult to detect or describe; elusive: a subtle smile.
- adj. Difficult to understand; abstruse: an argument whose subtle point was lost on her opponent.
- adj. Able to make fine distinctions: a subtle mind.
- adj. Characterized by skill or ingenuity; clever.
- adj. Crafty or sly; devious.
- adj. Operating in a hidden, usually injurious way; insidious: a subtle poison.
Century Dictionary and Cyclopedia
- Same as subtile, 1.
- Same as subtile, 2.
- Sly; insinuating; artful; cunning; crafty; deceitful; treacherous: as, a subtle adversary; a subtle scheme. Also subtile.
- Cunningly devised; artfully contrived or handled; ingenious; clever: as, a subtle stratagem. Also subtile.
- Characterized by acuteness and penetration of mind; sagacious; discerning; discriminating; shrewd; quick-witted: as, a subtle understanding; subtle penetration or insight. Also subtile.
- Made carefully level; smooth; even.
- Ingenious; skilful; clever; handy: as, a subtle operator. Also subtile. Synonyms Cunning, Artful, Sly, etc. (see
cunning ), designing, acute, keen, Jesuitical.
Wiktionary
- adj. Hard to grasp; not obvious or easily understood; barely noticeable.
- adj. of a thing Cleverly contrived.
- adj. of a person or animal Cunning, skillful.
- adj. insidious
- adj. Tenuous; rarefied; of low density or thin consistency.
GNU Webster's 1913
- adj. Sly in design; artful; cunning; insinuating; subtile; -- applied to persons.
- adj. Cunningly devised; crafty; treacherous.
- adj. Characterized by refinement and niceness in drawing distinctions; nicely discriminating; -- said of persons; ; refined; tenuous; sinuous; insinuating; hence, penetrative or pervasive; -- said of the mind; its faculties, or its operations; ; also, difficult of apprehension; elusive.
- adj. obsolete Smooth and deceptive.
WordNet 3.0
- adj. able to make fine distinctions
- adj. difficult to detect or grasp by the mind or analyze
- adj. working or spreading in a hidden and usually injurious way
Etymologies
- From Middle English sotil, subtil, from Old French soutil, later subtil, French subtil, from Latin subtilis ("fine, thin, slender, delicate"); probably, originally, “woven fine”, and from sub ("under") + tela ("a web"), from texere ("to weave"). (Wiktionary)
- Middle English sotil, from Old French, from Latin subtīlis; see teks- in Indo-European roots. (American Heritage® Dictionary of the English Language, Fourth Edition)
Examples
“But what they like most, Ms. Gary suspects, is that almost all ropes have been removed from rooms in the mansion, eliminating what she describes as a subtle but powerful negative.”
“In his report to the Security Council, Moreno-Ocampo said hundreds of civilians were killed during the last six months in Darfur, while thousands more were forcefully displaced and more than 2.5 million people are suffering what he called a subtle form of genocide through rape and fear.”
Voice of America: ICC Prosecutor: Genocide in Darfur is 'On-Going'
“I am really talking about two intertwined strands--which I referred to as the subtle/subversive body earlier.”
“GUPTA: Gregory O'Gara says when his kids are out of control, he sometimes uses what he calls a subtle smack or a whack.”
“We heard the defense lawyers in this particular case make a case for the state here having what they call a subtle case here.”
“Never before in all my life had I heard a boy use the word subtle.”
“It was not that when she tried to be what she called subtle (for wasn't Limbert subtle, and wasn't I?) her fond consumers, bless them, didn't suspect the trick nor show what they thought of it: they straightway rose on the contrary to the morsel she had hoped to hold too high, and, making but a big, cheerful bite of it, wagged their great collective tail artlessly for more.”
“I imagine in subtle ways, the race/cultural background shows up.”
Special Guest Post: Zetta Elliott on the Myth of Meritocracy
“I think that “the five” nudged the “humans” who they were in subtle ways toward some desired ends.”
Matthew Yglesias » Farley: Human-Cylon Alliance is Impractical and Irresponsible
“I'm not attributing any of these intentions to you, but only here making the point that very often the worst bias-ism comes in subtle packages that most of us just swallow hook, line, and sinker, often in the guish of political correctness.”
Lists
These user-created lists contain the word ‘subtle’.
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POL - scandalous (single words only)
cadre, bribery, bashing, backhander, clash, crony, coercion, coterie, chicanery, baksheesh, acolyte, backlash and 256 more...
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hunting
crudely, unequivocal, obsolete, obscure, overtly, misdeed, shack, inherent, outcry, hefty, composed, poised and 318 more...
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Psychology
Chapter 1
rigorous, occurrence, maze, divers, intellectual, expansion, all in all, sensation, introspection, radical, orientation, nurture and 174 more...
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CULI - wine-tasting adjectives
In this area of expertise nouns are frequently used as adjectives (almond, bacon, cider, diesel, fennel, fresh-cut hay, wool) or new adjectives are formed (appley, berrylike, citrusy, full-bodied, ...
acetic, acidic, aged, angular, appley, astringent, attractive, austere, berrylike, big, bitter, brawny and 511 more...
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3/4 year Vocab List
voracious, indiscriminate, eminent, steeped, replete, awe, buffoon, abound, technology, prognosticate, automaton, matron and 96 more...
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3/4 year Vocab List
voracious, indiscriminate, eminent, steeped, replete, awe, buffoon, abound, technology, prognosticate, automaton, matron and 96 more...
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POL - scandalous (words and collocati...
Words and collocations associated with political scandal
blow the whistle, boo, cronyism and rigging, democratic deficit, denigrate, dirty linen, fiasco, finger pointing a..., graft, hidden account, hush money, illicit financing... and 578 more...
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sound (quiet)
words for quiet sounds
( randomness, descriptive )sigh, murmur, whisper, whir, rustle, patter, hum, snap, hiss(sss), crackle, bleat, peep and 185 more...
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How low can you go?
A list of words that does the opposite of raising the bar
underscore, underwear, underachiever, underrated, underbite, undercapitalization, undercharged, underfloor, underground, underexposed, underfed, underboss and 105 more...
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common/uncommon GRE
Combination some common, some uncommon preparation of GRE words.
thwart, schmooze, siren, ebullient, eclectic, efficacy, adorn, felicitous, grandiloquent, eloquence, epitomize, vilify and 10 more...
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Lesson 15
complement, component, conjure, emphasize, homage, impromptu, lush, medley, oblige, pretentious, prowess, rustic and 3 more...
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15
complement, component, conjure, emphasize, homage, impromptu, lush, medley, oblige, pretentious, prowess, rustic and 3 more...
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Lesson 15
Complement, Component, Conjure, Emphasize, Homage, Impromptu, Lush, medley, oblige, pretentious, rustic, subtle and 2 more...
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Hard to Spell
Not sure I'd be able to spell these words...
camaraderie, belligerent, strategem, hippopotomonstros..., epitome, accommodate, subtle, sacrilegious, ambivalent, wookiee, onomatopoeia, idiosyncrasy and 3 more...
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D_Verbatim
sporadic, peculiar, treacherous, niche, ambiance, ruckus, notion, voyeurism, exclusion, proselytize, opaque, perverse and 13 more...
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2
transition, contents, conformity, division, labour, prominent, complexity, interrelationalship, similarity, note, tentative, convey and 75 more...
Tweets
Looking for tweets for subtle.

vanishedone The spelling hangs in a kind of limbo: it's changed from subtile, but it doesn't reflect the pronunciation either.
Edit: hang on, the Online Etymology Dictionary actually calls subtile a 'Latinized refashioning of the O.Fr. source of subtle'. I'd thought the word had slurred progressively on the way from subtilis, but apparently not. Dec 30, 2007
sonofgroucho What a strange little word this is! Dec 29, 2007