key; lock; key (to a problem, success, etc.); clue
fixing (in place); being fixed (in place); fixing (e.g. salary, capital); keeping the same; fixation (histology); user name (on an online forum like 2ch where the majority of users post anonymously)
troops; group members; team members; SDF officials
to peep (through); to peek; to await (one's chance); to guess; to infer
comprehension; consent; understanding; OK; roger
to open (e.g. doors); to open (e.g. business, etc.); to be empty; to be vacant; to be available; to be open (e.g. neckline, etc.); to have been opened (of one's eyes, mouth, etc.)
second (unit of time); arc second
next (to); adjoining; adjacent; house next door; neighbouring house; next-door neighbour
to look at; to gaze; to stare at
ahead; forward; (in) front; having a square front
(on a) closer look; closer scrutiny; second look
to shiver; to shake; to quake; to tremble; to quaver; to quiver
somehow; how; in what way; why; what kind of
shivering; trembling; shuddering; shaking
trembling with excitement
near; close; close (in time); soon; close (relationship); friendly
to declare; to assert; to say bluntly; to say straight out
to pretend to be tough; to put on a brave front; to whistle in the dark; to bluff
to fill; to become full (of); to wax (of the moon); to rise (of the tide); to flow; to expire (of a period of time)
groan; moan; growl; snarl; hum (e.g. of a motor); buzz
emission (of light); radiation (of light); luminescence
even more; still more; one step; one rung; one paragraph; one passage
contortion; distortion; warp; kink (in one's character); twist
to swallow; to gulp down; to understand; to grasp; to engulf; to swallow up
black spot; dark spot; sunspot
ball; sphere; bead (of sweat, dew, etc.); drop; ball (in sports); pitch (e.g. in baseball); pile (of noodles, etc.)
in an instant; in a flash; in the blink of an eye; in no time at all; just like that
to go by; to go past; to run (between; of a rail service, bus route, etc.); to operate (between); to go indoors; to go into a room; to penetrate
change to ...; becoming ...; making into ...; -ization; -ification
no matter how you put it; whatever the circumstances may be; say what you like; no matter how you look at it
past; after; too (much); over- (e.g. eating)
passing through (a tunnel, station, town, etc.); passing by (e.g. of a typhoon); passage (of a bill, e.g. through parliament); carriage; passing (an examination, inspection, etc.); clearing
shoe; shoes; boots; footwear; footgear
which (of three or more); well; now; c'mon
metre (unit of length); meter; meter; gauge
uncomfortable feeling; feeling out of place; sense of discomfort; malaise; physical unease
groan; moan; growl; roar; hum (of a machine, power lines, etc.); drone (e.g. of an engine)