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Definitions

septic

[sep-tik] / ˈsɛp tɪk /

ADJECTIVE

inflamed

Synonyms

STRONGEST

fevered infected irritated sore swollen

STRONG

blistered burnt chafed festered festering scalded tender

WEAK

bloodshot raw red

ADJECTIVE

insalubrious

Synonyms

WEAK

contaminated dangerous deleterious destructive harmful lethal noxious pernicious poisonous rotten spoiled toxic unhealthy unnutritious unsalutary venomous virulent

ADJECTIVE

mephitical

Synonyms

WEAK

bad baleful baneful corrupt corruptive dangerous deadly deleterious destructive detrimental evil fatal hurtful infective lethal malicious malignant mephitic miasmatic morbid mortal nocuous noisome noxious peccant pernicious pestiferous pestilential poison toxic toxicant toxiferous venomous vicious viperous virulent

ADJECTIVE

pestilential

Synonyms

WEAK

baneful deadly destructive fatal harmful infective injurious malign malignant mephitic noxious pernicious pestilent poison toxic toxicant unhealthy unwholesome venomous

ADJECTIVE

poisonous

Synonyms

STRONGEST

dangerous deadly destructive fatal lethal noxious pernicious toxic venomous vicious virulent

WEAK

bad baleful baneful corrupt corruptive deleterious detrimental evil hurtful infective malicious malignant mephitic miasmatic morbid mortal nocuous noisome peccant pestiferous pestilential poison toxicant toxiferous viperous

Antonyms

STRONGEST

gentle good harmless healthful healthy helpful kind life-giving nice nonpoisonous wholesome

WEAK

benevolent non-toxic

ADJECTIVE

poison/poisonous

Synonyms

WEAK

bad baleful baneful corrupt corruptive dangerous deadly deleterious destructive detrimental evil fatal hurtful infective lethal malicious malignant mephitic miasmatic morbid mortal nocuous noisome noxious peccant pernicious pestiferous pestilential toxic toxicant toxiferous venomous vicious viperous virulent

Antonyms

WEAK

aiding antidotal assisting curing healing helpful

ADJECTIVE

sanitized

Synonyms

STRONG

bare decontaminated desert desolate disinfected dry empty pasteurized sterilized waste

WEAK

antiseptic arid aseptic barren bleak dead effete fallow fruitless futile gaunt germ-free hygienic impotent infecund infertile sanitary unfruitful uninfected unprofitable unprolific vain without issue

Antonyms

STRONG

cultivated full productive

ADJECTIVE

sterile

Synonyms

STRONGEST

antiseptic arid barren bleak desolate futile hygienic impotent infertile

WEAK

aseptic bare dead decontaminated desert disinfected dry effete empty fallow fruitless gaunt germ-free infecund pasteurized sanitary sterilized unfruitful uninfected unprofitable unprolific vain waste without issue

Antonyms

STRONGEST

cheerful contaminated fertile fruitful potent productive profitable unclean unsanitary unsterile

WEAK

dirty

ADJECTIVE

toxic

Synonyms

STRONGEST

deadly harmful lethal noxious pernicious virulent

WEAK

baneful mephitic pestilential poison toxicant venomous

Antonyms

STRONGEST

harmless healthy helpful kind wholesome

WEAK

nonpoisonous

ADJECTIVE

toxicant

Synonyms

STRONG

bad evil mortal poison

WEAK

baleful baneful corrupt corruptive dangerous deadly deleterious destructive detrimental fatal hurtful infective lethal malicious malignant mephitic mephitical miasmatic morbid nocuous noisome noxious peccant pernicious pestiferous pestilential toxic toxiferous venomous vicious viperous virulent

Antonyms

STRONG

good honest upright virtuous

ADJECTIVE

uncreative

Synonyms

WEAK

antiseptic arid aseptic bare barren bleak dead decontaminated desert desolate disinfected dry effete empty fallow fruitless futile gaunt germ-free hygienic impotent infecund infertile pasteurized sanitary sterilized unfruitful unimaginative uninfected uninspired uninventive unoriginal unprofitable unprolific vain waste without issue

ADJECTIVE

uninventive

Synonyms

WEAK

antiseptic arid aseptic bare barren bleak dead decontaminated desert desolate disinfected dry effete empty fallow fruitless futile gaunt germ-free hygienic impotent infecund infertile pasteurized sanitary sterilized uncreative unfruitful unimaginative uninfected uninspired unoriginal unprofitable unprolific vain waste without issue

ADJECTIVE

unsalutary

Synonyms

WEAK

contaminated dangerous deleterious destructive harmful insalubrious lethal noxious pernicious poisonous rotten spoiled toxic unhealthy unnutritious venomous virulent

ADJECTIVE

unwholesome

Synonyms

WEAK

contaminated dangerous deleterious destructive harmful insalubrious lethal noxious pernicious poisonous rotten spoiled toxic unhealthy unnutritious venomous virulent

Antonyms

WEAK

healthful nutritious proper seemly wholesome

ADJECTIVE

virulent

Synonyms

STRONGEST

deadly destructive fatal malignant pernicious

WEAK

baneful harmful infective injurious malign mephitic poison toxic toxicant unhealthy unwholesome venomous

Antonyms

STRONGEST

harmless healthful helpful wholesome

WEAK

gentle healthy kind nice nonpoisonous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

At one point, the cave faced a potential threat when someone attempted to develop the land and convert the cave into a septic tank.

From Science Daily • Apr. 3, 2026

By that time, she was in septic shock with multiple organ failure.

From BBC • Mar. 11, 2026

The Polish patients' rights ombudsman also found that Izabela's rights had been violated, and recommended new protocols for septic shock and for situations posing threats to a woman's health.

From Barron's • Mar. 3, 2026

The couple was also told they would need to put in an advanced septic system at a cost of hundreds of thousands of dollars.

From The Wall Street Journal • Jan. 6, 2026

But instead of a rabbit hole, he discovered only a septic tank.

From "The Way to Rio Luna" by Zoraida Cordova

septic

Example Sentences

Related Words