Word Study
septic
CIDE DICTIONARY
septic, a. [Septi- + -ic.].
Of the seventh degree or order. [1913 Webster]
septic, a. [L. septicus, Gr. , fr. to make putrid: cf. F. septique.].
Having power to promote putrefaction. [1913 Webster]
septic, n.
A substance that promotes putrefaction. [1913 Webster]
OXFORD DICTIONARY
septic, adj. contaminated with bacteria from a festering wound etc., putrefying.
Idiom
septic tank a tank in which the organic matter in sewage is disintegrated through bacterial activity.
Derivative
septically adv. septicity n.
Etymology
L septicus f. Gk septikos f. sepo make rotten
THESAURUS
septic
bad, bad for, cankered, contaminated, diseased, foul, gangrened, gangrenous, harmful, infected, injurious, insalubrious, insanitary, morbid, morbific, mortified, noisome, noxious, pathogenic, pathological, peccant, pestiferous, poisoned, polluted, putrefacient, putrefactive, rotting, saprobic, saprogenic, saprogenous, saprophilous, saprophytic, sphacelated, tainted, ulcerated, ulcerous, unhealthful, unhealthy, unhygienic, unsanitary, unwholesomeROGET THESAURUS
septic
Insalubrity
N insalubrity, unhealthiness, nonnaturals, plague spot, malaria, death in the pot, contagion, toxicity, insalubrious, unhealthy, unwholesome, noxious, noisome, morbific, morbiferous, mephitic, septic, azotic, deleterious, pestilent, pestiferous, pestilential, virulent, venomous, envenomed, poisonous, toxic, toxiferous, teratogenic, narcotic, contagious, infectious, catching, taking, epidemic, zymotic, epizootic, innutritious, indigestible, ungenial, uncongenial, deadly.For further exploring for "septic" in Webster Dictionary Online