Source : WordNet®

onomatopoeical
     adj : (of words) formed in imitation of a natural sound;
           "onomatopoeic words are imitative of noises"; "it was
           independently developed in more than one place as an
           onomatopoetic term"- Harry Hoijer [syn: {echoic}, {imitative},
            {onomatopoeic}, {onomatopoetic}] [ant: {nonechoic}]