[in.tru.sive] adj (15c) 1 a: characterized by intrusion b: intruding where one is not welcome or invited
2. a: projecting inward "an ~ arm of the sea" b (1) of a rock: having been forced while in a plastic state into cavities or between layers (2): plutonic
3: having nothing that corresponds to a sound or letter in orthography or etymon "~ /t/ in /mints/ for mince" syn see impertinent -- intrusive n -- in.tru.sive.ly adv -- in.tru.sive.ness n