harmless

adjective

harm·​less ˈhärm-ləs 

1

: free from harm, liability, or loss

2

: lacking capacity or intent to injure : innocuous

a harmless joke

harmlessly adverb

harmlessness noun

Synonyms of harmless

• benign
• safe
• innocent
• innocuous
• inoffensive
• healthy

Examples of harmless in a Sentence

His ideas seem harmless enough.

We're just having a bit of harmless fun.

It was just a harmless joke.

Recent Examples on the Web

Lynch’s massive draft whiffs feel like harmless clerical rounding errors next to his good work in handling all the off-the-field stuff that lands on his desk. — Dieter Kurtenbach, Mercury News, 24 Aug. 2026

Procrastination problem Putting off tasks that feel daunting might seem harmless. — Gina Park, CNN Money, 24 Aug. 2026

Chase proves more clever in turning Maya’s harmless couch fort into a claustrophobic labyrinth. — Los Angeles Times, 21 Aug. 2026

With that kind of reach, one of the biggest risks a child can face may begin with a conversation that seems completely harmless. — Kurt Knutsson, FOXNews.com, 21 Aug. 2026

Word History

First Known Use

13th century, in the meaning defined at sense 1

Kids Definition

harmless

adjective

harm·​less ˈhärm-ləs 

1

: free from harm

2

: unable to harm

harmlessly adverb

harmlessness noun

Legal Definition

harmless

adjective

harm·​less

1

: free from harm, liability, or loss

—often used in the phrase to hold harmless see also hold harmless

2

: lacking capacity or intent to injure

harmlessly adverb

harmlessness noun