| cavern effect |
| chime(noun, verb, return, duplicate, renew) |
| chime in with(verb, expression, idiom, phrasal verb, assent) |
| chorus(verb, sound, say, pronunciation) |
| conform to(verb, phrasal verb, assent) |
| cuckoo |
| do again(verb, expression, get, return, copy) |
| echoing |
| empty hall phenomenon(expression, idiom) |
| explain(verb, return, acknowledge, deny, answer) |
| explanation(noun, return, sign, report, answer) |
| fake(verb, copy, steal, represent, imitate) |
| fall in with(verb, expression, idiom, phrasal verb, conjunction) |
| feedback(noun, verb, feeling, return, sign) |
| go along with(verb, expression, idiom, phrasal verb, assent) |
| greek nymph |
| kind of chamber(expression, idiom) |
| knell(noun, verb, reverberate, resound, resonate) |
| match(verb, feature, get, join, follow) |
| mock(verb, copy, assume, pretend, steal) |