upsetter

Nghĩa (Tiếng Anh)

1. One who upsets (something); a disrupter.
2. A person or device that turns something upside down.
3. A kind of forging machine that moves horizontally.

Từ đồng nghĩa

subverter

upsetting machine

diverter

sleeper

overthrower

Từ nguyên (Tiếng Anh)

From upset + -er.