This is the 'HIGH' setting on a Japanese appliance.

What a Japanese person actually thinks
A fan dial. A rice cooker. The air-con remote. That is genuinely the first association, and it is very hard to shake. Also common as a boy's name (Tsuyoshi).

Meaning

Literally: strong
Actually: An adjective stem, not a standalone word. In everyday life it appears mostly as a setting label: 強 / 中 / 弱 — high / medium / low.

Scores

Naturalness●●●●●

Not a freestanding word in modern Japanese. It needs to attach to something — 強い, 強力, 最強.

Coolness●●●●●

The appliance association kills it. You will be explaining this one forever.

Watch out

high強/中/弱 is the standard high/medium/low labelling on fans, heaters, rice cookers and air conditioners. Everyone in Japan reads this dial daily.

Get this instead

剛 gō
unyielding hardness

Actually reads as strength of character. No appliance association.
最強 saikyō
the strongest

If you want the bold version. Two characters, reads as a real word, slightly boastful in a knowing way.

On skin

強

Orientation: either

N/A — change the character.