Synonyms of followup

1 Syllable
flak, mark
2 Syllables
result, feedback, spinoff, kickback, reaction, recoil, imprint, rebound, backlash, echo, effect, waves, impact, fallout
3 Syllables
follow-up, follow-through, re-echo, influence
4 Syllables
after-effect, after-effects
5 Syllables
reverberation