Words that begin with the prefixes "im, il, ir, in"
irreplaceable
impossible to replace, something you can never get again
illogical
lacking orderly continuity, invalid or incorrect reasoning
illiterate
not able to read or write
illegitimate
of biological parents not married to each other, contrary to or forbidden by law
irresponsible
a form of untrustworthiness
illicit
contrary to or forbidden by law, in a manner disapproved or not allowed by custom, in an illegal manner
irregular
contrary to rule or accepted order or general practice, not occurring at expected times
irrelevant
having no bearing on or connection with the subject at issue
illegal
prohibited by law or by official or accepted rules
irreverent
showing lack of due respect or veneration
impossible
something that cannot be done