1) Booming 2) Loud 3) Reechoing 4) Resonant 5) Reverberant 6) Ringing 7) Vast 1) Bouncing off walls 2) Coming back in waves 3) Going off the walls 4) Parrotlike behavior 5) Reechoing 6) Repeating 7) Repeating by reflection 8) Repetition 9) Repetitious 10) Resounding 11) Reverberant 12) Ringing 13) Saying again 14) Saying likewise 
• (p. pr. & vb. n.) of Echo