hard-boiled

US /ˌhɑːrdˈbɔɪld/
UK /ˌhɑːrdˈbɔɪld/
"hard-boiled" picture
1.

cooked in its shell in boiling water until the yolk and white are solid

:
She made a salad with sliced hard-boiled eggs.
I prefer my eggs hard-boiled for breakfast.
2.

tough, unsentimental, and realistic

:
He's a hard-boiled detective who doesn't show much emotion.
The novel features a hard-boiled protagonist navigating a corrupt city.