E1C3H4O1
9 points
ECHO is validvalid
a repetition of sound by reflection of sound waves [n ECHOES, ECHOS] / to reverberate [v ECHOED, ECHOES, ECHOING] : ECHOER [n]
a reflected sound [n ECHOES or ECHOS] / to repeat a sound [v -ED, -ING, -ES]
a repetition of sound by reflection of sound waves [n ECHOES, ECHOS] / to reverberate [v ECHOED, ECHOES, ECHOING] : ECHOER [n]
a reflected sound [n ECHOES or ECHOS] / to repeat a sound [v -ED, -ING, -ES]