I. adjective
1.
Synonyms: healthy 1, ||bunkum, fit, hale, right, sane, well, well-conditioned, well-liking, wholesome
Related Word: intact, unimpaired; perfect
Idioms: sound as a bell ( or whistle), sound of mind and body
Contrasted words: impaired; unfit
Antonyms: unsound
2.
Synonyms: whole 1, flawless, intact, unblemished, unbroken, undamaged, unhurt, unimpaired, uninjured, unmarred
3.
Synonyms: stable 4, firm, secure, solid
Antonyms: unsound
4.
Synonyms: valid , cogent, convincing, satisfactory, satisfying, solid, telling
Related Word: errorless, faultless, flawless, impeccable; accurate, correct, exact, precise; rational, reasonable; well-founded, well-grounded
Contrasted words: questionable, shaky; invalid
Antonyms: unsound
5.
Synonyms: orthodox 1, accepted, authoritative, canonical, received, sanctioned
6.
Synonyms: rational , consequent, intelligent, logical, reasonable, sensible
Related Word: right-minded, sober, sober-minded, sound-minded
Antonyms: unsound
II. noun
1.
a sensation or effect resulting from stimulation of the auditory receptors
the sound of thunder
Synonyms: noise, sonance
Related Word: vibration; resonance; sonancy; reverberation
Contrasted words: quiet, soundlessness
Antonyms: silence
2.
Synonyms: earshot , hearing
III. verb
1.
Synonyms: seem , appear, look
2.
Synonyms: declare 1, advertise, announce, annunciate, blaze (abroad), broadcast, disseminate, proclaim, promulgate, publish
IV. verb
to measure the depth of (as a body of water) typically with a weighted line
sounding the distance to the bottom
Synonyms: fathom, plumb, plumb-line
Idioms: ||cast ( or sling) the lead, make a sounding, take soundings