| in- (il-, ir-, im- (Latin: in, into, within, inside, on, toward; used as a prefix).The in- changes or is assimilated to il- before l, as with illuminate, to im- before b, as with imbibe; before m, as with immediate; before p, as with implant; and to ir- before r, as with irrigate. Note the differences between this in- and the previous one.illuminate: imbibe: immigrate: import: inaugurate: incalescent: incandescent: inflammable: inject: inscribe: irradiate: |