sure-fire

Nghĩa (Tiếng Anh)

Guaranteed to work or happen.

Từ đồng nghĩa

infallible

assured

dependable

excellent

faultless

sure

unfailing

good

👍

unflagging

Từ nguyên (Tiếng Anh)

From sure + fire, originally used to denote the efficacy of firearms (rifles) to fire.