having a headache; racking one's brains; troubling over something
to come to like; to become fond of; to fall in love
unrelated; irrelevant; unconcerned; unconnected
sexual act; sexual intercourse
to sympathize with; to sympathise with; to think of (a far-off person, place, etc.); to cast one's mind to; to worry about; to feel anxious about
reason; reasoning power; (one's) sense
to be effective; to take effect; to work; to function well; to be possible (to do, use, etc.); to be able to
nicely; properly; frequently; often; I'm glad that you ...; thank you for ...
creak; squeak; creaking; discord; strife; friction
suitable or moderate temperature
to be oversized (overloud, etc.)
(game pieces, soldiers, etc.) under one's control
model; pattern; paragon; exemplar
how many people; a number of people
advantageous; favourable; better; profitable; lucrative; gainful
special purpose submarine (esp. Japanese midget submarines used in WWII)
class (e.g. school); grade; rank; kyū; kyu; junior rank in martial arts, go, shogi, etc.
ship; boat; tank; tub; counter for boat-shaped containers (e.g. of sashimi)
collecting; accumulating; collection (of art, stamps, insects, etc.); garbage collection; waste collection
to extend (e.g. a house); to add to (e.g. coals to a fire)
house; one's house; one's home; one's family
laboratory; seminar room; professor's office
using as an intermediary; through
soft; software; soft hat; felt hat; soft serve ice cream; softball
hard; tough; hardware; hard disk
isolation; cut off; blockade; quarantine; interception; deprivation
whichever one chooses; either way
as many as one likes; as much as one likes; great many; plenty; almost (none); (not) much
the problem (at issue); the point at issue; problematic issue; problem
to slip into; to crawl into (under); to conceal oneself (under); to sneak into; to infiltrate
whereabouts; place where one is; position; location
rolling stock; railroad cars; wheeled vehicles
to fall into (someone's) hands; to fall under someone's control; to become someone's property (e.g. of an object)
rescue mission; evacuation operation
to take command; to give direction
older brother and younger sister
to desire; to wish; to beg; to request; to have something done for oneself
optimism; taking an optimistic view
how; in what way; how (much); to what extent; however (much); no matter how