Nouns

(n)echo, reverberation, sound reflection, replicationthe repetition of a sound resulting from reflection of the sound waves“she could hear echoes of her own footsteps”
(n)echoa reply that repeats what has just been said
(n)echoa reflected television or radio or radar beam
(n)echoa close parallel of a feeling, idea, style, etc.“his contention contains more than an echo of Rousseau”, “Napoleon III was an echo of the mighty Emperor but an infinitely better man”
(n)echoan imitation or repetition“the flower arrangement was created as an echo of a client's still life”

Verbs

(v)repeat, echoto say again or imitate“followers echoing the cries of their leaders”
(v)resound, echo, ring, reverberatering or echo with sound“the hall resounded with laughter”
(v)echo, recallbring to mind“His words echoed John F. Kennedy”