harmless
4 synonyms and 1 antonym for harmless, grouped by meaning and by how common each one is.
Adj — Not capable of causing injury or harm; safe.
Synonyms
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
How to use harmless
The word patterns that sound natural to a native speaker.
Etymology
From Old English hearmlēas, built from harm plus the suffix -less ("without"). The German cousin harmlos means the same thing.
Full origin of harmless →