Harmless and Plain

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Harmless adjective - Not causing or being capable of causing injury or hurt.

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Plain and harmless are semantically related. In some cases you can use "Plain" instead an adjective "Harmless".

Nearby Words: harm, harmful, harmlessly

Plain adjective - Free from all additions or embellishment.

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Harmless and plain are semantically related. Sometimes you can use "Harmless" instead an adjective "Plain".

Nearby Words: plainly, plainness, plaint

She's actually a man — a masculine, adventurous man who uses the dress to appear harmless and hide in plain sight.

Source: Harmless Lady Disguise
The character almost always appears perfectly cute and harmless on the surface but underneath they may be obsessive, controlling, and sometimes just plain insane.

Source: Yandere
He pretends to be a harmless old man who almost everyone else thinks is senile, and is more concerned with reliving the "good old days" then having anything to do with Bobby's plans to sell Southfork...all while he's pulling incriminating evidence from the family in plain sight.

Source: Series / Dallas

Cite this Source

Plain and Harmless. (2016). Retrieved 2026, August 14, from https://thesaurus.plus/related/harmless/plain

Harmless & Plain. N.p., 2016. Web. 14 Aug. 2026. <https://thesaurus.plus/related/harmless/plain>.

Plain or Harmless. 2016. Accessed August 14, 2026. https://thesaurus.plus/related/harmless/plain.

Google Ngram Viewer shows how "harmless" and "plain" have occurred on timeline