(anatomy) a medial pterygoid muscle

(phonology, grammar) a form of euphony whereby certain historical morae became sokuon before /t/

immediately, promptly, instantly, on the spot

breath / live / give birth / nurture / spread, multiply / rest / come to an end

to touch; to contact

transmission, a gearbox (a mechanical assembly of gears that changes the torque and speed of shaft rotations)

(organic chemistry) benzoic acid

irregularity, unsteady, disorderly

(figuratively) volatile, critical, dangerous, touch-and-go

一挙手一投足: each and every individual action, every movement