The Clue "Tohfa..tohfa..tohfa..tohfa.." effect
The Answer ECHO
The clue "Tohfa..tohfa..tohfa..tohfa.." suggests repetition of a sound. An echo is exactly that – a sound that reflects off surfaces and comes back to the listener. When you say "tohfa" multiple times, it creates an echo effect. So, the answer "ECHO" perfectly fits the clue.