reciprocate

transitive verb reciprocated, reciprocating

1. 1. to give and get, do, feel, etc. reciprocally; interchange
   2. to give, do, feel, etc. in return; return in kind or degree
2. to cause to move alternately back and forth

intransitive verb

1. to make some sort of return for something done, given, etc.
2. to move alternately back and forth; interchange position
3. Archaic to be correspondent or equivalent