late Middle English (in the sense torment, harass): from French infesteror Latin infestareassail, from infestushostile. The current sense dates from the mid 16th cent
英英釋義網絡釋義
vern
1.invade in great numbers;
the roaches infested our kitchen
2.occupy in large numbers or live on a host;
the Kudzu plant infests much of the South and is spreading to the North