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adjective
empty, hollowed out
Synonyms: alveolate, arched, carved out, cavernous, cleft, concave, cupped, cup-shaped, curved, deep-set, depressed, dimpled, excavated, incurved, indented, infundibular, notched, not solid, pitted, striated, sunken, troughlike, unfilled, vacant, vaulted, void
Antonyms: convex, full, raised, solid
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adjective
deep, resonant in sound
Synonyms: cavernous, clangorous, dull, echoing, flat, ghostly, low, muffled, mute, muted, resounding, reverberant, ringing, roaring, rumbling, sepulchral, sounding, thunderous, toneless, vibrant, vibrating
Antonyms: high, light, soft
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adjective
meaningless
Synonyms: empty, fruitless, futile, idle, nugatory, otiose, pointless, specious, unavailing, useless, vain, worthless
Antonyms: earnest, meaningful, sincere, substantial
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adjective
false, artificial
Synonyms: cynical, deceitful, faithless, flimsy, hypocritical, insincere, treacherous, unsound, weak
Antonyms: frank, genuine, honest, real, sincere, truthful
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noun
empty or dented area
Synonyms: basin, bottom, bowl, cave, cavern, cavity, chamber, channel, cleft, concavity, crater, cup, dale, den, depression, dimple, dip, dish, excavation, groove, gulf, hole, indentation, notch, pit, pocket, sag, scoop, sinkage, sinkhole, socket, trough, vacuity, valley, void
Antonyms: solid
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verb
empty out; make concave
Synonyms: channel, chase, corrugate, dent, dig, dish, ditch, excavate, furrow, gorge, groove, indent, notch, pit, rabbet, remove, rut, scoop, shovel, trench
Antonyms: fill, make convex, raise