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adjective
fine, light, slender
Synonyms: attenuate, attenuated, beanpole, beanstalk, bony, cadaverous, delicate, emaciated, ethereal, featherweight, fragile, gangling, gangly, gaunt, haggard, lank, lanky, lean, lightweight, meager, narrow, peaked, pinched, pole, puny, rangy, rarefied, rawboned, reedy, rickety, scraggy, scrawny, shadow, shriveled, skeletal, skinny, slight, slim, slinky, small, spare, spindly, stalky, starved, stick, stilt, subtle, threadlike, twiggy, twiglike, undernourished, underweight, wan, wasted, wizened
Antonyms: dense, fat, heavy, inflated, obese, thick
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adjective
transparent, fine
Synonyms: attenuate, attenuated, delicate, diaphanous, filmy, flimsy, gossamer, paper-thin, permeable, rare, rarefied, refined, see-through, sheer, slight, slim, subtile, subtle, tenuous, translucent, unsubstantial, wafer-thin, wispy
Antonyms: dense, solid, thick
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adjective
deficient, weak
Synonyms: diluted, feeble, flat, flimsy, implausible, improbable, inadequate, inconceivable, incredible, insubstantial, insufficient, lame, meager, poor, questionable, scant, scanty, scarce, scattered, shallow, sketchy, skimpy, slight, sparse, stretched, superficial, thick, transparent, unbelievable, unconvincing, unpersuasive, unsubstantial, untenable, vapid, weak-kneed
Antonyms: efficient, solid, strong
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adjective
diluted
Synonyms: diffuse, dilute, dispersed, fine, light, rarefied, refined, runny, subtle, watery, weak, wishy-washy
Antonyms: concentrated, thick, undiluted
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verb
make diluted or less dense
Synonyms: attenuate, cook, cut, cut back, decrease, delete, diminish, disperse, doctor, edit, emaciate, expand, extenuate, irrigate, lace, needle, prune, rarefy, reduce, refine, shave, spike, trim, water, water down, weaken, weed out
Antonyms: beef up, thicken