CACOPHONOUS
cacophonous, cacophonic
(adjective) having an unpleasant sound; “as cacophonous as a henyard”- John McCarten
Source: WordNet® 3.1
Etymology
Adjective
cacophonous (comparative more cacophonous, superlative most cacophonous)
Containing, consisting of, or producing harsh, unpleasant or discordant sounds.
Synonyms
• inharmonious, unmusical, unmelodic
Antonyms
• harmonious, musical, euphonious
Source: Wiktionary
Cac`o*phon"ic, Cac`o*phon"ic*al, Ca*coph"o*nous, Cac`o*pho"ni*ous, a.
Definition: Harsh-sounding.
Source: Webster’s Unabridged Dictionary 1913 Edition