How many letters does the top answer for “the killing of a human being by another human being” have?

The most common answer is homicide (8 letters).

Crossword clue: the killing of a human being by another human being

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

homicide 8 letters wn-def

the killing of a human being by another human being

another word for being 50% similar → beingness, existence

another word for human 50% similar → homo

another word for humans 50% similar → humankind, mankind

another word for killing 50% similar → kill, sidesplitting