Synonyms of the word

harmless

• adj. Incapable of causing harm or danger.
• adj. Not intended to harm; inoffensive.
• adj. Safe.

atoxic

• adj. Synonym of nontoxic.

benign

• adj. Kind; gentle; mild.
• adj. (of a climate or environment) mild and favorable.
• adj. not harmful to the environment: [in combination] an ozone-benign refrigerant.
• adj. (medicine) Not posing any serious threat to health; not particularly aggressive or recurrent.

benignant

• adj. (now rare) Kind; gracious; favorable.

harmless

• adj. Incapable of causing harm or danger.
• adj. Not intended to harm; inoffensive.
• adj. Safe.

innocent

• adj. Free from guilt, sin, or immorality.
• adj. Bearing no legal responsibility for a wrongful act.
• adj. Naive; artless.
• adj. (obsolete) Not harmful; innocuous; harmless.
• adj. (with of) Having no knowledge (of something).
• adj. (with of) Lacking (something).
• adj. Lawful; permitted.
• adj. Not contraband; not subject to forfeiture.
• n. Those who are innocent; young children.

innocuous

• adj. Harmless; producing no ill effect.
• adj. Inoffensive; unprovocative; not exceptional.

innoxious

• adj. Having no harmful effect.

inoffensive

• adj. not offensive.
• adj. harmless.

insipid

• adj. Unappetizingly flavorless.
• adj. Flat; lacking character or definition.
• adj. Cloyingly sweet or sentimental.

nonmalignant

• adj. Not malignant, without malice.
• adj. (medicine) Of a growth in the body, not cancerous.

nontoxic

• adj. Not toxic; not poisonous.

painless

• adj. Free from pain; without pain or trouble.
• adj. Not difficult; easy.

safe

• adj. Not in danger; free from harm's reach.
• adj. Free from risk; harmless, riskless.
• adj. Providing protection from danger; providing shelter.
• adj. (baseball) When a batter successfully reaches first base, or when a baserunner successfully advances to…
• adj. Properly secured; secure.
• adj. (used after a noun, often forming a compound) Not susceptible to a specified source of harm.
• adj. (Britain, slang) Great, cool, awesome, respectable; a term of approbation.
• adj. (slang) Lenient, usually describing a teacher that is easy-going.
• adj. Reliable.
• adj. Cautious.
• n. A box, usually made of metal, in which valuables can be locked for safekeeping.
• n. (slang) A condom.
• n. (dated) A ventilated or refrigerated chest or closet for securing provisions from noxious animals or insects.
• v. (transitive) To make something safe.

uncontroversial

• adj. Not controversial.

unoffending

• adj. Not offending.