中々: very, quite, considerably, rather, by no means (with negative verb)

very, quite, considerably, rather / by no means (with negative verb)

the daytime, during the day / a half day, half of a day

inside

Supersonic speed.

subsonic speed

(UK) micrometre, (US) micrometer

A unit of measure equal to 10⁻¹² m; (UK) picometre, (US) picometer.

(mechanics) aerodynamics

(exercise) wall squat / A group activity where a ring of people attempt to maintain the position of "sitting" on the lap of the person behind them.