Translation of "overkill" - English-Turkish dictionary

overkill

noun [ U ] uk us /ˈəʊvəkɪl/

when something is done too much

fazladan olan şey, gereksiz yapılan şey
Should I add an explanation or would that be overkill?

(Translation of “overkill” from the Cambridge Learner’s Dictionary English-Turkish © Cambridge University Press)