idle (adjective)
lazy
idol (noun)
god
imitate (verb)
copy
immerse (verb)
dip, submerge in water
impudent (adjective)
rude
influence (verb)
persuade
inhabit (verb)
live
insane (adjective)
mad
insert (verb)
slot one thing into another, like a key into a lock
insolent (adjective)
rude
inspire (verb)
motivate, encourage
intention (noun)
purpose
interior (noun)
inside
invalid (adjective)
unacceptable, void, out of date
invalid (noun)
person made weak or disabled