loud (adj.)

Middle English, from Old English hlud "noisy; making or emitting noise" (of voices, musical instruments, etc.), from Proto-Germanic *hludaz "heard" (source also of Old Frisian and Old Saxon hlud, Middle Dutch luut, Dutch luid, Old High German hlut, German laut "loud"), from PIE *klutos- (source also of Sanskrit srutah, Greek klytos "heard of, celebrated," Latin inclutus "renowned, famous," Armenian lu "known," Irish cloth "noble, brave," Welsh clod "praise, fame"), suffixed form of root *kleu- "to hear."

Of places, "noisy," from 1590s. Application to colors, garments, etc. ("flashy, showy") is by 1849. Also used colloquially of notably strong or bad smells. Paired with clear (adj.) at least since c. 1650.

loud (adv.)

Old English hlude "loudly, noisily," from Proto-Germanic *khludai (source also of Dutch luid, German laut), from the source of loud (adj.).

updated on June 10, 2017

Definitions of loud from WordNet
loud (adj.)
characterized by or producing sound of great volume or intensity;
a group of loud children
loud thunder
her voice was too loud
loud trombones
loud (adj.)
tastelessly showy;
loud sport shirts
loud (adj.)
(used chiefly as a direction or description in music) loud; with force;
Synonyms: forte
loud (adv.)
with relatively high volume;
he spoke loud enough for those at the back of the room to hear him
Synonyms: loudly / aloud
Etymologies are not definitions. From, not affiliated with etymonline.