pertinacity, n. 1. stubbornness, pigheadedness, bull-headedness, mulishness, Inf. orneriness; obstinacy, Inf. cussedness, pervicaciousness; obdurateness, intractability, inflexibility, intransigence, intransigency; rigidity, will of iron, sternness, stiffness; perverseness, contumacy, contrariness, willfulness; mind of one's own, sticking up for one's ideas.
2. persistence, insistence, tenacity, holding fast, holding one's course, doggedness, determination, perseverance; constancy, the constancy of Penelope, devotion, steadfastness, steadiness; resolution, resoluteness, resolve, purposefulness, purposiveness, Inf. plugging away; firmness, Inf. stick-to-it-iveness, Inf. stick-at-it-iveness, seeing it through, riding it out, never giving up, never saying die; assiduity, assiduousness, diligence, sedulity, sedulousness, industriousness, hard work, hustle, knocking on every door, going back for more; toughness, SI. hanging tough, SI. hanging in there, SI. hanging on through hell or high water; sturdiness, strength, stamina, indefatigability; endurance, weathering the storm, putting up with anything, patience, patience of Job, patience of a saint; grit, Inf. spunk, Inf. sand, pluck, mettle, backbone, courage.
pertinence, n. pertinency, relevance, relevancy, germaneness, relatedness; aptness, suitability, suitableness, appropriateness, appositeness, felicity, felicitousness; fitness, concordance, consonance, harmony, harmoniousness, congruousness.
pertinent, adj. 1. relevant, germane, related, to the point, to the purpose, short and sweet, Latin, ad rem, applicable, at issue; apt, appropriate, apropos, apposite, pat, bearing on, felicitous.
2. fit, suitable, well-suited, well-adapted, fitted, useful, convenient; proper, due, meet, seemly, decorous, right, correct, fitting, befitting; correspondent, corresponding, analogous, coherent; concerning, regarding, appurtenant, pertaining to; conforming, consonant, congruous, harmonious, consistent, compatible.
pertness, n. sauciness, freshness, boldness, brazenness, brashness, shamelessness, Inf cheekiness, Inf. sassiness, Inf. brassiness; insolence, impertinence, impudence, audacity, effrontery, presumption, presumptuousness; bumptiousness, cockiness, selfassertiveness, chutzpah, forwardness; impoliteness, disrespect, contemptuousness, unmannerliness, illmanneredness, incivility, rudeness; meddlesomeness, intrusiveness, officiousness.
perturb, v. 1. disturb, disquiet, discompose, shake, shake up, agitate, discountenance, ruffle, fluster, flutter, distract, disconcert, unsettle, put out; alarm, trouble, upset; shock, jolt, jar, stagger, rock, rattle, pull one up short; arouse, excite, suscitate, foment, impassion, stir up, work up, wind up, whip up, fire up.
2. anger, nettle, gall, chafe, vex, madden, infuriate; provoke, pique, irritate.
3. confuse, addle, muddle, unbalance, unsettle, confound, perplex, bewilder, baffle, mix up; derange, disarrange, disorder, throw into disorder, disorganize, turn topsy-turvy.
perturbation, n. 1. disturbing, discomposing, ruffling, Inf shaking up, bothering, pestering, harassing, SI. bugging, SI. hassling, SI. driving [s.o.] nuts or crazy or bananas; irritating, annoying, vexing, provoking, aggravating; getting on [s.o.'s] nerves, Chiefly U.S. riling, Inf. giving [s.o.] a pain, Inf. getting in [s.o.'s] hair.
2. perturbment, disquiet, disquietude, unquietness, uneasiness, unease, inquietude, restlessness, unrest;