v.
 say or do something in reply or as a reaction.
n.
  - Architecture  a half-pillar or half-pier attached to a wall to support an arch.
- (in church use) a responsory; a response to a versicle.
Derivative
  
  Etymology
  ME: from OFr., from respondre ‘to answer’, from L. respondere, from re- ‘again’ + spondere ‘to pledge’.