late 15c., "to attack, assail, hurt, distress, annoy," from Middle French infester, from Latin infestare "to attack, disturb, trouble," from infestus "hostile, dangerous," originally "inexorable, not able to be handled," from in- "not, opposite of" (see in- (1)) + -festus "(able to be) seized." Sense of "swarm over in large numbers" first recorded c. 1600. Related: Infested; infesting.
例文
1. Several animals in sea water can infest wood.
海水中には木材を侵害する動物がたくさんいる。
2.Vermin infest their youth,and fortunes must be spent for curative powders.
害虫が彼らを悩ます青春と富は治療用の粉花でなければならない。
3.Watch out for fleas and ticks that may infest your pet.