[in.trude] vb in.trud.ed ; in.trud.ing [ME, fr. L intrudere to thrust in, fr. in- + trudere to thrust--more at threat] vi (15c) 1: to thrust oneself in without invitation, permission, or welcome
2: to enter as a geological intrusion ~ vt 1: to thrust or force in or upon someone or something esp. without permission, welcome, or fitness
2: to cause to enter as if by force -- in.trud.er n