introductory, adj. 1. prefatory, preludial, preludi-ous, prelusive, prelusory, prologomenous, proemial; preliminary, precursory, antecedent, preceding; leading, lead off or in; initiatory, initiative, inaugural, beginning, initial, starting.
2. preparatory, explanatory, expositional, background; elementary, fundamental, basic, basal, rudi-mental; primary, first level, first grade, embryonic, incipient.
introspect, v. look into oneself, examine one's mind or conscience, search one's heart, search one's soul; think over, bethink, sleep on it, consult one's pillow; ponder, muse, meditate, contemplate; reflect, brood, ruminate, speculate, deliberate,
introspection, n. self-examination, self-analysis, selfobservation, self-contemplation, self-judgment; soul-searching, heart-searching; self-consultation, self-communion, self-counsel; musing, meditation, contemplation, relection, speculation, rumination, brooding, deliberation.
introspective, adj. reflecting, musing, pondering, ruminant, meditative, deliberative; contemplative, speculative, reflective, thoughtful; engrossed, lost in thought, rapt, absorbed, concentrating, abstracted; immersed or plunged in thought, occupied, preoccupied.
introvert, n. self-inspector, self-counselor, self-scru-tinizer, self-observer; brooder, muser, ponderer; shy person, bashful person, timid person, wallflower,
intrude, v. 1. obtrude, break in, interfere, intervene, interrupt, interpose, insinuate; meddle, pry, Inf. snoop, Inf. kibitz, poke one's nose into; busybody, have one's finger in every pie, have one's nose in every door; impose upon, interlope, thrust upon, force upon, foist upon; storm in, burst in, Inf barge in, cut in, SI. butt in, U.S. SI. horn in, crash, crash the gates; chime in, interject, inject, put one's two cents in; muscle in, worm in, irrupt; discommode, inconvenience, trouble, annoy, vex, dun, bother, pester, irk.
2. encroach, infiltrate, invade, poach; infringe, impinge, entrench, trench; overstep, transgress, trespass, overrun.
intruder, n. 1. meddler, intermeddler, interloper, interferer; busybody, Inf. snoop, prier; back-seat driver, Inf. kibitzer, SI. yenta, SI. buttinsky, cuckoo.
2. invader, raider, attacker, aggressor, encroacher, infiltrator; squatter, poacher, trespasser, stowaway, gate-crasher, crasher, uninvited guest, unwelcome guest.
3. parvenu, upstart, newcomer, incomer, outsider,
intrusion, n. 1. obtrusion, interloping, meddling, intermeddling; imposition, interposition, interposal, insinuation, interference, interruption.
2. encroachment, invasion, infringement, impingement, poaching; incursion, inroad, irruption, illapse, influx, ingress; overstepping, transgression, trespass, overrunning; aggression, attack, overture.
3. presumption, presumptuousness, obtrusiveness, meddlesomeness; officiousness, impertinence, forwardness.