ultrahazardous
The word “ultrahazardous” has 5 syllables: ul-tra-haz-ard-ous
It's pronounced as /ʌl.trəˈhæz.ər.dəs/
What is synonym and antonym for ultrahazardous?
In the thesaurus, “ultrahazardous” has 55 synonyms and 11 antonyms.
Here are synonyms and antonyms for ultrahazardous along with examples of usage in sentences.
Synonyms for ultrahazardous
- adverse
- bad
- baleful
- baneful
- chance
- dangerous
- deadly
- deathly
- deleterious
- destructive
- detrimental
- dicey
- dire
- distressing
- evil
- fatal
- fateful
- fell
- grave
- grievous
- haphazard
- harmful
- hazardous
- hurtful
- ill
- inimical
- injurious
- insecure
- jeopardizing
- killer
- lethal
- malignant
- menacing
- mortal
- murderous
- nasty
- noxious
- parlous
- perilous
- pernicious
- pestilent
- precarious
- random
- risky
- serious
- sickening
- threatening
- treacherous
- ugly
- uncertain
- unhealthy
- unpleasant
- unsafe
- venturesome
- wicked
Antonyms for ultrahazardous
- advantageous
- beneficial
- good
- harmless
- innocent
- innocuous
- nonhazardous
- nonthreatening
- safe
- ultrasafe
- unthreatening
Example Sentences
- The workers were trained to handle materials deemed ultrahazardous with utmost care.
- The sign warned of the presence of an ultrahazardous substance in the restricted area.
- The disposal of the chemical waste was considered an ultrahazardous task requiring specialized equipment.
- The environmental cleanup crew wore protective gear when dealing with an ultrahazardous spill.
- The regulatory agency imposed strict guidelines for the transportation of ultrahazardous materials to ensure public safety.
On this page you'll find 66 synonyms, antonyms, or another words to ultrahazardous, such as: advantageous, adverse, bad, baleful, baneful, beneficial, chance.
Make sure to choose synonyms and antonyms that are appropriate for the context of the sentence.
Related Words
venturesome
- absurd
- adventuresome
- adventurous
- adverse
- aggressive
- asinine
- audacious
- bad
- baleful
- balmy
- baneful
- bold
- brainless
- brash
- brave
- chance
- courageous
- crazy
- dangerous
- daredevil
- daring
- dashing
- dauntless
- deadly
- deathly
- deleterious
- destructive
- detrimental
- dicey
- dire
- distressing
- dumb
- emboldened
- enterprising
- evil
- fatal
- fateful
- fearless
- fell
- foolhardy
- foolish
- free-swinging
- gadarene
- gallant
- grave
- greathearted
- grievous
- gritty
- gutsy
- half-witted
- haphazard
- hardy
- harebrained
- harmful
- hasty
- hazardous
- headlong
- heedless
- heroic
- heroical
- hotheaded
- hurtful
- idiotic
- idiotical
- ill
- impetuous
- imprudent
- impulsive
- incautious
- inimical
- injurious
- insane
- insecure
- intrepid
- irrational
- jeopardizing
- killer
- lethal
- lionhearted
- lunatic
- mad
- madcap
- malignant
- menacing
- moronic
- mortal
- murderous
- nasty
- nerved
- nervy
- noxious
- nutty
- overbold
- overconfident
- parlous
- perilous
- pernicious
- pestilent
- plucky
- precarious
- precipitate
- pushy
- random
- rash
- reckless
- resourceful
- risky
- scatterbrained
- serious
- sickening
- silly
- spirited
- spunky
- stalwart
- stout
- stouthearted
- stupid
- sturdy
- swashbuckling
- temerarious
- thoughtless
- threatening
- treacherous
- ugly
- ultrahazardous
- unafraid
- uncertain
- undaunted
- unhealthy
- unnecessary
- unpleasant
- unreasonable
- unsafe
- valiant
- valorous
- venturous
- wacky
- whacky
- wicked
- wild
- witless
parlous
- adventurous
- adverse
- alarming
- bad
- baleful
- baneful
- breakneck
- chance
- chancy
- critical
- dangerous
- dangersome
- deadly
- deathly
- deleterious
- delicate
- destructive
- detrimental
- dicey
- dire
- distressing
- dynamite
- evil
- exposed
- fatal
- fateful
- fell
- formidable
- grave
- grievous
- hairy
- haphazard
- harmful
- hazardous
- heavy
- hot
- hurtful
- ill
- impending
- impregnable
- inimical
- injurious
- insecure
- jeopardizing
- jeopardous
- killer
- lethal
- loaded
- malignant
- menacing
- mortal
- murderous
- nasty
- noxious
- on collision course
- perilous
- pernicious
- pestilent
- portentous
- precarious
- pressing
- queasy
- random
- risky
- serious
- serpentine
- shaky
- sickening
- speculative
- terrible
- thorny
- threatening
- ticklish
- touch-and-go
- touchy
- treacherous
- ugly
- ultrahazardous
- uncertain
- unhealthy
- unpleasant
- unsafe
- unstable
- urgent
- venturesome
- venturous
- viperous
- vulnerable
- wicked
dangerous
- adverse
- alarming
- bad
- baleful
- baneful
- breakneck
- chance
- chancy
- contagious
- critical
- damaging
- dangersome
- deadly
- deathly
- deleterious
- delicate
- destructive
- detrimental
- dicey
- dire
- distressing
- dynamite
- evil
- exposed
- fatal
- fateful
- fell
- formidable
- grave
- grievous
- hairy
- haphazard
- harmful
- hazardous
- heavy
- hostile
- hot
- hurtful
- ill
- impending
- imperiling
- imperilling
- impregnable
- infectious
- infective
- inimical
- injurious
- insecure
- insidious
- jeopardizing
- jeopardous
- killer
- lethal
- loaded
- malignant
- menacing
- mischievous
- mortal
- murderous
- nasty
- no-go
- nocuous
- noisome
- noxious
- ominous
- on collision course
- parlous
- perilous
- pernicious
- pestiferous
- pestilent
- pestilential
- poisonous
- portentous
- precarious
- prejudicial
- pressing
- queasy
- random
- risky
- ruinous
- serious
- serpentine
- shaky
- sickening
- sinister
- speculative
- terrible
- thorny
- threatening
- ticklish
- touch-and-go
- touchy
- treacherous
- ugly
- ultrahazardous
- uncertain
- unfriendly
- unhealthful
- unhealthy
- unpleasant
- unsafe
- unsound
- unstable
- unwholesome
- urgent
- venomous
- venturesome
- viperous
- vulnerable
- wicked
jeopardizing
- adventuring
- adverse
- bad
- baleful
- baneful
- be careless
- chance
- chance it
- chancing
- compromising
- dangerous
- deadly
- deathly
- deleterious
- destructive
- detrimental
- dicey
- dire
- distressing
- endangering
- evil
- exposing
- fatal
- fateful
- fell
- gamble
- grave
- grievous
- haphazard
- harmful
- hazard
- hazarding
- hazardous
- hurtful
- ill
- imperil
- imperiling
- imperilling
- inimical
- injurious
- insecure
- intimidating
- jeoparding
- killer
- lay on the line
- lethal
- malignant
- menacing
- mortal
- murderous
- nasty
- noxious
- parlous
- peril
- periling
- perilling
- perilous
- pernicious
- pestilent
- precarious
- put at risk
- put in danger
- put in jeopardy
- random
- risk
- risking
- risky
- serious
- sickening
- stake
- subject to
- subjecting
- tempt fate
- threaten
- threatening
- treacherous
- ugly
- ultrahazardous
- uncertain
- unhealthy
- unpleasant
- unsafe
- venturesome
- venturing
- wagering
- wicked