septic

sep·tic
S1E1P3T1I1C3
Australia/ˈsep.tɪ̝k/Australia[ˈsep.tʰɪ̝k]US, UK/ˈsɛp.tɪk/US, UK[ˈsɛp.tʰɪk]

adjective

Of or pertaining to sepsis.

“septic tank”

Opposite
Less commonScrabble 10

Meanings

septic1

adjectiveseptic (comparative more septic, superlative most septic)

comparative more septic · superlative most septic · alternative obsolete septick

  1. Of or pertaining to sepsis.
  2. Causing sepsis or putrefaction.
  3. Of or pertaining to sewage or the disposal of sewage.

    septic tank

    1 more example

    a septic system

nounseptic (plural septics)

plural septics · alternative obsolete septick

  1. A substance that causes sepsis or putrefaction.
    1 more example

    1750, John Pringle, Further Experiments on Substances Resisting Putrefaction, in 1809, Charles Hutton, George Shaw, Richard Pearson (editors), The Philosophical Transactions of the Royal Society of London, Volume X: 1750—1755, page 86, But, in the prosecution of this subject, he had met with very few real septics; and found many substances, commonly accounted such, of a quite opposite nature.

  2. datedmedicineA person who has sepsis.

    Acid-base balance data revealed moderately abnormal metabolic balance for both septics and nonseptics (in either direction) with normal respiratory balance or mild alkalosis.

    1983 May/June, Ivo Giovannini, Giuseppe Boldrini, Marco Castagneto, Gabriele Sganga, Giuseppe Nanni, Mauro Pittiruti, Giancarlo Castiglioni, “Respiratory Quotient and Patterns of Substrate Utilization in Human Sepsis and Trauma”, in Journal of Parenteral and Enteral Nutrition, volume 7, number 3, →DOI, page 227
  3. A septic tank; a system for the disposal of sewage into a septic tank, a septic system.

    The question is whether there are any spatial differences in how septics impact water quality, and whether these spatial variations should be considered when regulating septic improvement or removal.

    2008, Alexey Voinov, Systems Science and Modeling for Ecological Economics, page 244

septic2

nounseptic (plural septics)

plural septics

  1. mathematicsA mathematical object (function, curve, surface, etc.) of degree seven.

    Enriques states that it is possible to construct a family of septics with a singular curve of degree 7 and genus 4 having a triple point that degenerates to the above configuration[…].

    2002, Ingrid C. Bauer, Fabrizio Catanese, Roberto Pignatelli, “Canonical Rings of Surfaces Whose Canonical System has Base Points”, in Ingrid C. Bauer et al., editors, Complex Geometry: Collection of Papers Dedicated to Hans Grauert, page 66
    1 more example

    Now consider the two septics C = U⁷ᵢ₌₁Cᵢ, D = U⁷ᵢ₌₁Dᵢ and note that for i = 1,2,3,4,5,6 the lines Cᵢ and Dᵢ are parallel, so that the intersection of two septics S' consists of 6⁶^([sic]) + 6 + 1 = 43 points and it is the singular set of a foliation of degree 6.

    2003, Antonio Campillo, Santiago Encinas, “Two Dimensional Complete Ideals”, in Luchezar L. Avramov et al., editors, Commutative Algebra: Interactions with Algebraic Geometry: International Conference, page 71
adjectiveseptic (not comparable)
  1. not comparablemathematicsOf the seventh degree or order.

septic3

nounseptic (plural septics)

plural septics · alternative Septic

  1. AustraliaNew ZealandUKethnicslangslurAn American, a Yank.

    “Didn′t enjoy the septics,” he says jokingly about the Americans.

    2011, Roger Rees, Out of Calamity: Stories of Trauma Survivors, unnumbered page
    2 more examples

    Typical septic. Can't understand why the rest of the world thinks he's a fuck-knuckle.

    1998 April 21, Justin Downey, “Re: rachel is awful cute!”, alt.nuke.the.USA, aus.flame.usa, and alt.flame

    “What′s the septics′ Achilles heel?” I said using the slang septic tank, meaning Yank.

    2012, John Righten, The Benevolence of Rogues, page 97

Septic4

nounSeptic (plural Septics)

plural Septics

  1. AustraliaCockneyNew ZealandUKalternativeslangAlternative form of septic; an American.

    Not only didn′t he want to tour he didn′t even want “Septics” (“Septic Tanks,″ meaning Yanks) to buy his records.

    1992 February, “The Brit Pack”, in Spin, page 41

Synonyms & antonyms

adjectivecontaining or resulting from disease-causing organisms

Opposite

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

septic · adjective, noun

  1. Ancient Greekσηπτικός“characterized by putridity”
  2. Englishseptic

From Ancient Greek σηπτικός (sēptikós, “characterized by putridity”), from σηπτός (sēptós), from σήπω (sḗpō).

Full word history & related roots →

septic · noun, adjective

  1. Latinseptem“seven”
  2. Englishseptic

From Latin septem (“seven”) + -ic.

Full word history & related roots →

Translations

Ancient Greek σηπτικός
  • σηπτικός (sēptikós)of or pertaining to sepsis
Bulgarian септичен, септичен
  • септичен (septičen)of or pertaining to sepsis
  • септичен (septičen)causing sepsis
Catalan sèptic, sèptic
  • sèpticof or pertaining to sepsis
  • sèpticcausing sepsis
Danish septisk
  • septiskof or pertaining to sepsis
Esperanto sepsa
  • sepsaof or pertaining to sepsis
Finnish septinen, septinen
  • septinenof or pertaining to sepsis
  • septinencausing sepsis
French septique
  • septiqueof or pertaining to sepsis
German septisch
  • septischof or pertaining to sepsis
Greek σηπτικός
  • σηπτικός (siptikós)of or pertaining to sepsis
Indonesian septik, septik
  • septikof or pertaining to sepsis
  • septikcausing sepsis
Irish seipteach, seipteach
  • seipteachof or pertaining to sepsis
  • seipteachcausing sepsis
Italian settico
  • setticoof or pertaining to sepsis
Latin sēpticus
  • sēpticusof or pertaining to sepsis
Māori ero
  • eroof or pertaining to sepsis
Norwegian Bokmål septisk
  • septiskof or pertaining to sepsis
Polish septyczny
  • septycznycausing sepsis
Portuguese séptico, sético
  • sépticoof or pertaining to sepsis
  • séticoof or pertaining to sepsis
Spanish séptico, séptico
  • sépticoof or pertaining to sepsis
  • sépticocausing sepsis
Swedish septisk
  • septiskof or pertaining to sepsis
Welsh septig
  • septigof or pertaining to sepsis
Cite this entry
APA

septic. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/septic

MLA

“septic.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/septic. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “septic,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/septic.

Source: septic on Wiktionary, CC BY-SA 4.0.