vt infected. ·cf. enfect.
2. infect ·vt to contaminate with illegality or to expose to penalty.
3. infect ·vt to affect with infectious disease; to communicate infection to; as, infected with the plague.
4. infect ·vt to taint with morbid matter or any pestilential or noxious substance or effluvium by which disease is produced; as, to infect a lancet; to infect an apartment.
5. infect ·vt to communicate to or affect with, as qualities or emotions, ·esp. bad qualities; to corrupt; to contaminate; to taint by the communication of anything noxious or pernicious.