Reciprocate

v.kind, joyfulwarm

What it means

To respond to a kind action or feeling in a similar way.

Reach for it when describing a fitting return of kindness, trust, effort, or feeling

The neighbors reciprocate by caring for one another's gardens.

everyday
match
when equal effort or generosity is intended
not when Matching focuses on amount rather than relationship.
everyday
respond
when any answering action is enough
not when A response can oppose the original action rather than reciprocate it.
everyday
return
when giving the same kind of help or feeling back is clear
not when Return can be transactional and does not guarantee equal spirit.
warm
give back
when gratitude motivates a broad return to others
not when Giving back need not benefit the original giver.
professional
acknowledge
when recognition is all the situation requires
not when Acknowledgment does not provide a corresponding action.
professional
repay
when settling a debt or answering help with help is central
not when Repay frames kindness as an obligation and may diminish it.
formal
answer in kind
when the response closely mirrors the first action
not when This phrase can sound retaliatory in conflict.
literary
requite
when returning affection or service suits elevated prose
not when Requite is rare and can also refer to revenge.

reciprocate kindness
He chose to reciprocate kindness by mentoring the next apprentice.
reciprocate affection
The shy cat began to reciprocate affection after several patient weeks.
reciprocate the gesture
The neighboring school will reciprocate the gesture during the spring term.

The definition and the example on this page are written here. The dictionaries above ground which meaning is being described, not the wording.