tòu​dǐng

thoroughly

透顶 透頂 tòu//dǐng
thoroughly
thoroughly; extremely; out-and-out; often used after an adjective to indicate that a quality has reached its limit
reach the head (med.)
(bound form) to reach the head; specifically used to describe symptoms of syphilis reaching the crown of the head
reach the top
to reach the summit or top point

Frequency

Movie subtitles
5.69 per million appears in 3% of films
Written text
1.08 per million

Sources