1. Not related to or suitable for everyday needs or activities

See also: impractical

• infernal
• infernal machine
• infernal region
• infernally
• inferno
• infertile
• infertility
• infest
• infestation
• infibulation
• infidel
• infidelity
• infield
• infielder
• infill
• infiltrate
• infiltration
• infiltrator
• infimum
• infinite
• infinitely
• infiniteness
• infinitesimal
• infinitesimal calculus
• infinitesimally