| pert | (adjective) characterized by a lightly pert and exuberant quality | Synonyms: impertinent, irreverent, saucy |
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| pertain | (verb) be a part or attribute of | Synonyms: appertain |
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| (verb) be relevant to | Synonyms: bear on, come to, concern, have to do with, refer, relate, touch, touch on |
| pertainym | (noun) meaning relating to or pertaining to | - |
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| pertinacious | (adjective) stubbornly unyielding | Synonyms: dogged, dour, persistent, tenacious, unyielding |
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| pertinaciously | (adverb) in a dogged and pertinacious manner | - |
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| pertinacity | (noun) persistent determination | Synonyms: doggedness, perseverance, persistence, persistency, tenaciousness, tenacity |
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| pertinence | (noun) relevance by virtue of being applicable to the matter at hand | Synonyms: applicability, pertinency |
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| pertinency | (noun) relevance by virtue of being applicable to the matter at hand | Synonyms: applicability, pertinence |
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| pertinent | (adjective) being of striking appropriateness and pertinence | Synonyms: apposite, apt |
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| (adjective) having precise or logical relevance to the matter at hand | Synonyms: to the point |
| pertinently | (adverb) in a pertinent way | - |
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| pertly | (adverb) in an impudent or impertinent manner | Synonyms: freshly, impertinently, impudently, saucily |
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| pertness | (noun) inappropriate playfulness | Synonyms: archness, impertinence, perkiness, sauciness |
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| (noun) quality of being lively and confident | - |
| perturb | (verb) throw into great confusion or disorder | Synonyms: derange, throw out of kilter |
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| (verb) disturb in mind or make uneasy or cause to be worried or alarmed | Synonyms: cark, disorder, disquiet, distract, trouble, unhinge |
| (verb) cause a celestial body to deviate from a theoretically regular orbital motion, especially as a result of interposed or extraordinary gravitational pull | - |
| (verb) disturb or interfere with the usual path of an electron or atom | - |
| perturbation | (noun) the act of causing disorder | Synonyms: disruption |
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| (noun) a disposition that is confused or nervous and upset | Synonyms: fluster |
| (noun) activity that is a malfunction, intrusion, or interruption | Synonyms: disturbance |
| (noun) (physics) a secondary influence on a system that causes it to deviate slightly | - |
| (noun) an unhappy and worried mental state | Synonyms: disturbance, upset |
| perturbed | (adjective) thrown into a state of agitated confusion; (`rattled' is an informal term) | Synonyms: flustered, hot and bothered, rattled |
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| perturbing | (adjective) causing distress or worry or anxiety | Synonyms: distressful, distressing, disturbing, troubling, worrisome, worrying |
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| pertussis | (noun) a disease of the respiratory mucous membrane | Synonyms: whooping cough |
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