n. 25B6; adjective
your heart is sound : HEALTHY, in good condition, in good shape, fit, hale and hearty, in fine fettle; undamaged, unimpaired.
a sound building : WELL BUILT, solid, substantial, strong, sturdy, durable, stable, intact, unimpaired.
sound advice : WELL FOUNDED, valid, reasonable, logical, weighty, authoritative, reliable.
a sound judge of character : RELIABLE, dependable, trustworthy, fair; good, sensible, wise, judicious, sagacious, shrewd, perceptive.
financially sound : SOLVENT, debt-free, in the black, in credit, creditworthy, secure.
a sound sleep : DEEP, undisturbed, uninterrupted, untroubled, peaceful.
a sound thrashing : THOROUGH, proper, real, complete, unqualified, out-and-out, thoroughgoing, severe; informal right (royal).
unhealthy, unsafe, unreliable, insolvent, light.