#405.  Faintness. —­ N. faintness &c. adj.; faint sound, whisper,
breath; undertone, underbreath[obs3]; murmur, hum, susurration; tinkle; “still small voice.”
     hoarseness &c. adj.; raucity[obs3]. 
     V. whisper, breathe, murmur, purl, hum, gurgle, ripple, babble, flow;
tinkle; mutter &c. (speak imperfectly) 583; susurrate[obs3].
     steal on the ear; melt in the air, float on the air. 
     Adj. inaudible; scarcely audible, just audible; low, dull; stifled,
muffled; hoarse, husky; gentle, soft, faint; floating; purling, flowing &c. v.; whispered &c. v.; liquid; soothing; dulcet &c. (melodious) 413; susurrant[obs3], susurrous[obs3]. 
     Adv. in a whisper, with bated breath, sotto voce[Lat], between the
teeth, aside; piano, pianissimo; d la sourdine[obs3]; out of earshot inaudibly &c. adj.

—­ p. 114 —­ % (ii) SPECIFIC SOUNDS %

     #406. [Sudden and violent sounds.] Snap. —­ N. snap &c. v.; rapping
&c. v.; decrepitation, crepitation; report, thud; burst, explosion, blast, boom, discharge, detonation, firing, salvo, volley.
     squib, cracker, firecracker, cherry bomb, M80, gun, cap, cap gun,
popgun.
     implosion.
     bomb burst, atomic explosion, nuclear explosion (arms) 727.
     [explosive substances] gunpowder, dynamite, gun cotton,
nitroglycerine, nitrocellulose, plastic explosive, plastique, TNT, cordite, trinitrotoluene, picric acid, picrates, mercury fulminate (arms) 727.
     whack, wham, pow. 
     V. rap, snap, tap, knock, ping; click; clash; crack, crackle; crash;
pop; slam, bang, blast, boom, clap, clang, clack, whack, wham; brustle[obs3]; burst on the ear; crepitate, rump.
     blow up, blow; detonate. 
     Adj. rapping &c. v. 
     Int. kaboom! whamo!  Heewhack! pow!

     #407. [Repeated and protracted sounds.] Roll. —­ N. roll &c. v.;
drumming &c. v.; berloque[obs3], bombination[obs3], rumbling; tattoo, drumroll; dingdong; tantara[obs3]; rataplan[obs3]; whirr; ratatat, ratatat-tat; rubadub; pitapat; quaver, clutter, charivari[obs3], racket; cuckoo; repetition &c. 104; peal of bells, devil’s tattoo; reverberation &c. 408.
     [sound of railroad train rolling on rails] clickety-clack.
     hum, purr.
     [animals that hum] hummingbird.
     [animals that purr] cat, kitten (animal sounds) 412. 
     V. roll, drum, rumble, rattle, clatter, patter, clack;
bombinate[obs3].
     hum, trill, shake; chime, peal, toll; tick, beat.
     drum in the ear, din in the ear. 
     Adj. rolling &c. v.; monotonous &c. (repeated) 104; like a bee in a
bottle.

—­ resonance here covers 3 sound qualities; echo, low note, and ringing.  They should be separated.  The physical science meanings must also be listed separately —­