Healthy

hale, hearty, well; see healthy 1.

Firm

solid, stable, safe; see reliable 2.

Sensible

reasonable, rational, prudent; see judicious.

Free from defect

flawless, unimpaired, undecayed; see whole 2.

Proper

valid, allowed, fair, sanctioned, orthodox; see also legal 1, valid 1, 2.

Deep

deep, intellectual, thoughtful, soulful; see profound 2.

Complete

thorough, effectual, total; see absolute 1.

Trustworthy

dependable, loyal, true; see faithful, reliable 1. See syn. study at valid.

Something audible

vibration, din, racket; see noise 1.

The quality of something audible

noise, resonance, note, timbre, tone, music, pitch, intonation, accent, tonality, tenor, sonorousness, character, quality, softness, loudness, reverberating, reverberation, sonority, ringing, mournfulness, joyousness, lightness, assonance, amplification, vibration, modulation, sweetness, harshness, discord, consonance, harmony.

Water between an island and the mainland

strait, bay, bight; see channel 2.

To make a noise

vibrate, echo, resound, reverberate, give out sound, shout, sing, whisper, murmur, clatter, clank, rattle, blow, blare, bark, ring out, detonate, explode, thunder, emit sound, spread sound, buzz, gabble, rumble, hum, jabber, jangle, jar, whine, crash, bang, reflect, burst, boom, shrill, clitter, ruckle, chatter, creak, clang, crack, crackle, snap, roar, babble, clap, patter, prattle, clink, toot, cackle, clack, thud, slam, smash, blast, thump, snort, shriek, moan, play, quaver, trumpet, croak, caw, quack, squawk.

To measure

rule, mark, gauge, fathom, plumb; see also examine 2, measure 1.

To seem

appear, give the impression, appear to be; see seem.

To pronounce

articulate, enunciate, verbalize; see say, utter.