IPA: //rɪˈsɪprəˌkeɪtɪv//
KK: /rɪˈsɪprəˌkeɪtɪv/
Relating to a mutual exchange or interaction where two parties give and receive something from each other.
Their relationship was reciprocative, as they both supported each other equally.
Reciprocative → It is formed from "re-" (meaning back or again) and "cipere" (meaning to take). The word describes the act of taking back or returning something in a mutual exchange.
Think of 'taking back' ('re-') in a mutual exchange ('cipere') — that's why reciprocative means relating to mutual return.