Of persons, their actions, dispositions, etc.: Bad, wicked; base, rascally unjust. Also of an animal: Ill-tempered. Obsolete.

Hurtful, harmful, injurious.

Full of malign, deadly, or noxious influence; pernicious, destructive, noxious, injurious, mischievous, malignant. Physically or generally.

Harmful, injurious.

Harmful, injurious. Also: insulting, abusive.

Doing or tending to do harm; hurtful, mischievous, prejudicial. Of advice, etc.: Misleading. Of an omen, etc.: Boding ill.

figurative. Morally or spiritually hurtful or injurious; pernicious. Obsolete.

Injurious, harmful, dangerous. Also absol. as n.

Causing prejudice; of a harmful tendency; detrimental or damaging (to rights, interests, etc.).

Of a person or animal, their actions, mind, or attributes: fierce, savage; cruel, ruthless; dreadful, terrible. Also in cruel and fell, fierce an…

Fraught with harm or injury; injurious, hurtful.

Of things, events, accidents, etc.: Bringing serious trouble or discomfort; having injurious effects; †causing hurt or pain. (Now only with mixture…

Doing or tending to do harm; hurtful, injurious, pernicious, noxious, mischievous, prejudicial; dangerous. Prov. ill weeds grow apace.

Bad, in various senses (not always clearly distinguishable). Frequent in Middle English use; later… Actually or potentially harmful, destructive…

Harmful, injurious, noxious. Obsolete.

figurative. Imbued with some virulent or malevolent quality; harmful or injurious in some way; noxious; = envenomed, adj. 2.

Annoying, troublesome, tiresome. Also: harmful, hurtful, noxious.

Fraught with damage, hurtful, injurious; causing loss or disadvantage.

Of an event or occurrence: unfortunate, calamitous, disastrous. Of a person: miserable, needy, poverty-stricken. Also as n. Obsolete.

Not promoting or conducive to, harmful or prejudicial to, well-being, good condition, soundness, etc.; hurtful, noxious.

(un-, prefix1 affix 4.)

Causing loss or harm; hurtful, pernicious. Obsolete. rare.

= prejudicial, adj.1

Morally or socially injurious, noxious, or dangerous; grievous, ‘pestilent’. Obsolete.

Injurious, hurtful.

Morally or socially harmful; pernicious.

Causing loss or injury; hurtful, injurious.

Harmful or dangerous to religious, moral, or social order; noxious, pernicious.

Harmful; noxious. Cf. nuisible, adj.

Harmful.

Harmful, hurtful.

Harmful, hurtful; of the nature of a nuisance.

Harmful, poisonous, injurious; unwholesome.

Harmful, injurious, hurtful. Obsolete.

Morally or socially harmful; pernicious; repulsive, abhorrent.

Wrongful, injurious, hurtful; illegal. Obsolete.

Morally or socially harmful; pernicious; abhorrent. Now rare.

Harmful, injurious.

Hurtful, harmful, injurious. Obsolete.

Hurtful, injurious. Obsolete. (Cf. danger, n. 6.)

That offends (in various senses of the verb); esp. that has caused the hurt or offence in question.

Causing loss or injury; hurtful, injurious.

Tending to hurt or damage; hurtful, harmful, detrimental, deleterious.

Of the nature of an offence, fault, or crime; hurtful, harmful, injurious; offensive.

Hurting, hurtful; injurious.

Destructive to well-being, pernicious, injurious.

Disadvantageous, hurtful, injurious. Obsolete.

Harmful; = prejudicial, adj.1 1.

= prejudicial, adj.1 1.

= inimical, adj.

Injurious, hurtful, detrimental.

Having a deleterious or pernicious effect; (of a disease or illness) liable to become established; (also) infectious, catching. Now rare.

Without to or infinitive. Liable or exposed to harm. Obsolete. rare.

= nocive, adj.

That causes mischief or damage; hurtful, injurious.

Noxious, hurtful; venomous, poisonous.

Tending to do disservice; unhelpful, hurtful, detrimental.

Adverse or injurious in tendency or influence; harmful, hurtful. Const. to.

= detrimental, adj.

Causing loss or damage; harmful, injurious, hurtful.

= inimical, adj.

= incommodious, adj.

The hyperbolical use of the word in sense 6 gives rise to a weakened sense: Causing serious harm, disastrous, gravely mischievous.

Adverse, harmful, inimical.

Originally: †harmful, noxious (obsolete). Now (Medicine): designating or relating to an epileptogenic focus in the cerebral cortex that interferes…

Causing damage or loss; injurious.

= inimical, adj.

Not having a healthy mental or social influence or effect.

= detrimental, adj.

(un-, prefix1 affix 1.)

That damages; causing damage or injury, injurious, hurtful.

Of the nature of a damnum, i.e. causing loss or damage of any kind, whether involving a legal wrong (injury) or not.

Bad; harmful; unfashionable, boring. Esp. in the anti-drug slogan crack is wack and variants.