The dense, serious version of 'never give up'.

What a Japanese person actually thinks
Formal and forceful — the register of a company motto or a sports team banner. Reads as disciplined rather than aggressive.

Meaning

Literally: not bending + not yielding
Actually: Indomitable; refusing to bend or break under pressure.

Scores

Naturalness●●●●●

Established yojijukugo.

Coolness●●●●●

Strong, though the repeated 不 makes it look slightly symmetrical and corporate. That's a feature if you want gravity, a bug if you want poetry.

Watch out

low撓 is a rare, complex character. On a small tattoo it will blur into a black smudge within ten years. Size up.

On skin

不撓不屈

Orientation: vertical

Mincho at generous size. Do not let anyone talk you into this at 3cm — 撓 alone has 15 strokes.