Harmful synonyms

härm'fəl

Category:

Part of speech:

hurtful
Tending to impair or damage; injurious; mischievous; occasioning loss or injury.
15
7
wounding
Causing harm or injury
8
1
toxic
Capable of causing injury or death, especially by chemical means; poisonous.
8
2
ill-omened
Having a bad omen; inauspicious; unlucky.
7
1
unharmful (antonym)
Not harmful.
6
5
Advertisement
nocuous
Likely to cause harm or damage
3
0
consumptive
Consuming or tending to consume.
3
0
painful
Distressing or embarrassing:
3
0
pernicious
Causing great injury, destruction, or ruin; fatal; deadly
3
0
annihilative
Capable of causing utter destruction or serving to destroy utterly:
3
0
crippling
That cripples
3
1
Advertisement
mischievous
The definition of mischievous is someone or something that causes harm or likes to play and annoy with tricks.
3
3
malicious
Of, pertaining to, or as a result of malice or spite
2
0
malignant
Very harmful, dangerous, or virulent
2
0
sinful
Containing or consisting in sin; contrary to the will of a god, goddess, gods and/or goddesses.
2
0
baneful
Portending harm; ominous.
2
0
deleterious
Having a harmful effect; injurious:
2
0
Advertisement
damaging
Harmful; injurious; causing damage.
2
0
dire
Dire is defined as something that is urgent.
1
0
devouring
Causing harm or injury
1
0
insidious
Beguiling but harmful; alluring:
1
0
devastating
Causing devastation
1
0
disastrous
Of the nature of a disaster; causing great harm, damage, etc.; calamitous
1
0
Advertisement
murderous
(Informal) Capable of devastating or overwhelming:
1
0
undetermining
Causing harm or injury
1
0
destructive
Tending or likely to cause destruction
1
0
stunting
Causing harm or injury
1
0
killing
That literally deprives of life; lethal, deadly, fatal.
1
0
fatal
Very destructive; most unfortunate; disastrous
1
0
costly
Of high price or value; expensive:
1
0
Advertisement
fraught with evil
Causing harm or injury
1
0
extirpative
Of, relating to, or pertaining to an extirpation.
1
0
poisonous (related)
Capable of injuring or killing by or as by poison; containing, or having the effects of, a poison; toxic; venomous
1
0
aiding (antonym)
injurious, hurtful
1
0
undesirable (related)
1
0
carcinogenic (related)
1
0
Advertisement
demoniac
Possessed, produced, or influenced by a demon:
1
1
maleficent
Harmful or evil in intent or effect.
1
1
adverse
Unfavorable; harmful
1
1
virulent
Extremely hostile or malicious:
1
2
afflicting
Causing harm or injury
0
0
fell
Fierce; terrible; cruel
0
0
diabolic
Very wicked or cruel
0
0
Advertisement
satanic
Of, pertaining to or resembling Satan (the Devil).
0
0
ill
Promising trouble; unfavorable; unfortunate; unpropitious
0
0
grievous
Causing suffering; hard to bear; severe
0
0
mortal
Conceivable; imaginable:
0
0
lethal
Causing or capable of causing death; fatal or deadly
0
0
malevolent
Malevolent is defined as someone or something that is harmful or evil.
0
0
Advertisement
mephitic
Of or caused by mephitis
0
0
venomous
(Zool.) Having a poison gland or glands and able to inflict a poisonous wound by biting or stinging
0
0
cruel
(Slang) Cool; awesome; neat.
0
0
felonious
Of, relating to, being, or having the quality of felony; malignant; malicious; villainous; traitorous; perfidious.
0
0
aching
Full of painful yearning or sorrow:
0
0
Advertisement
pricking
Causing harm or injury
0
0
objectionable
Open to objection
0
0
fiendish
Extremely vexatious or difficult
0
0
unlucky
Resulting or likely to result in misfortune; inauspicious:
0
0
malign
Showing ill will; malicious
0
0
sinistrous
Part or all of this entry has been imported from the 1913 edition of Webster's Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.
0
0
Advertisement
noisome
Offensive to the senses; disgusting, unpleasant, nauseous; foul, fetid, especially having an undesirable smell; sickening, nauseating.
0
0
devilish
Very great; extreme
0
0
corrosive
Having the quality of fretting or vexing.
0
0
wicked (related)
Naughty in a playful way; mischievous
0
0
catastrophic
Involving or resulting in substantial, often ruinous medical expense:
0
0
deadly
Oppressively tiresome
0
0
detrimental
Causing damage or harm; injurious.
0
0
hazardous
Depending on chance; risky.
0
0
injurious
Causing physical harm or injury; harmful.
0
0
nasty
Very unpleasant; objectionable
0
0
noxious
Harmful to the mind or morals; corrupting:
0
0
prejudicial
Causing or tending to cause harm, especially to a legal case:
0
0
ruinous
Bringing or tending to bring ruin; very destructive or harmful; disastrous
0
0
unhealthy
Characterized by or symptomatic of disturbed mental health:
0
0
unsafe
Not safe; dangerous.
0
0
harmless (antonym)
Not intended to harm or offend; inoffensive.
0
0
helpful (antonym)
The definition of helpful is someone or something that is useful, that provides assistance or aid, or that is prone to providing aid.
0
0
assisting (antonym)
injurious, hurtful
0
0
nice (antonym)
Used as an intensive with and :
0
0
evil
(Computing, programming, slang) undesirable; harmful; bad practice
0
0
help (related)
Causing harm or injury
0
0
harm (related)
0
0
dangerous (related)
0
0
malefic
Having or exerting a malignant influence.
0
1
internecine
Characterized by struggle within a group, usually applied to an ethnic or familial relationship.
0
1
inimical
Like an enemy; hostile; unfriendly
0
1
harassing
Causing harm or injury
0
1
sinister
Causing or intending harm or evil; wicked:
0
1
subversive
Tending or seeking to subvert, overthrow, or destroy (an established government, institution, belief, etc.)
0
1
incendiary
Causing or designed to cause fires, as certain substances, bombs, etc.
0
1
calamitous
Concerning or involving calamity, disastrous.
0
1
cataclysmic
Of or pertaining to a cataclysm; causing great destruction or upheaval; catastrophic.
0
2
corroding
Causing harm or injury
0
2
pestilential
Like or constituting a pestilence; widespread and deadly
0
2
pestiferous
Containing organisms that cause contagious diseases
0
2
corrupting
Causing harm or injury
0
2
morbific
Causing or leading to disease
0
2
corrupt
Deteriorated from the normal or standard
0
2
treacherous
Deceitful; inclined to betray.
0
2
wild
(Slang) Extraordinary; remarkable
0
2
sapping
Causing harm or injury
0
2
habit-forming
Capable of leading to physiological or psychological dependence:
0
2
serious
Really intending what is said; being in earnest; not jesting or deceiving; meaningful.
0
2
fraught with harm
Causing harm or injury
0
2
doing harm
Causing harm or injury
0
2
sore
Painful to the touch; tender.
0
2
brutal
Plain and direct, although distressing in effect
0
2
pure (antonym)
(Philosophy) Free of empirical elements:
0
2
healthful (antonym)
Healthy.
0
2
good (antonym)
(Especially when capitalized) Holy.
0
2
ominous (related)
Specifically, giving indication of a coming ill; being an evil omen; threatening; portentous; inauspicious.
0
2
pestilent
Likely to cause death; deadly
0
2
demolitionary
Causing harm or injury
0
3
Find another word for harmful. In this page you can discover 123 synonyms, antonyms, idiomatic expressions, and related words for harmful, like: hurtful, menacing, wounding, toxic, ill-omened, bad, unharmful, baleful, nocuous, consumptive and painful.
Trending topics
5 Awesome Ways to Say Thanks
Could You Pass a Basic English Grammar Test?
Cats Puns
Words With Two Spellings
More Slideshows

Harmful Sentence Examples

  • The Egyptian rule proved harmful to the country.

  • The ordinary pleasures of life were for them not merely negligible but positively harmful inasmuch as they interrupted the operation of the will.

  • Though harmful to the economic condition of the island, it left agriculture comparatively unaffected, because the insolvent institutions had never fulfilled the objects of their foundation.

  • And most of them are harmful, especially the women.

  • An institution upholding honor, the source of emulation, is one similar to the Legion d'honneur of the great Emperor Napoleon, not harmful but helpful to the success of the service, but not a class or court privilege.

More sentences →

Words that mention harmful in the Dictionary

Words near harmful in the Thesaurus