IPA: /ɪnˈfæntɪˌsaɪdəl/
KK: /ɪnˈfæntɪˌsaɪdəl/
Relating to the act of killing an infant or very young child.
The infanticidal tendencies in the story shocked the readers.
Infanticidal → It is formed from "infans" (from Latin, meaning infant or baby) and "-cidal" (from Latin "caedere", meaning to kill). The word "infanticidal" refers to the act of killing infants.
Think of 'infans' meaning infant and '-cidal' meaning to kill — this helps you remember that infanticidal refers to the act of killing infants.