Definition of infect

• v. t. - Infected. Cf. Enfect.
• v. t. - 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.
• v. t. - To affect with infectious disease; to communicate infection to; as, infected with the plague.
• v. t. - 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.
• v. t. - To contaminate with illegality or to expose to penalty.