indispensable; essential; requisite; required; compulsory; necessary
work; operation; manufacturing; fatigue duty
training; drill; practice; discipline
free-to-play; without paying
charges; billing; paying for items in online games
fixed value; constant value
fatigue; weariness; exhaustion; tiredness
to wake up; to awake; to perk up; to awaken (to the truth, etc.); to come to a realization; to come to one's senses
shop; store; somebody who sells (something) or works as (something); somebody with a (certain) personality trait; house; roof
mode (musical mode, mode of probability distribution, state of physical system); fashion
to contain; to comprise; to hold in the mouth; to bear in mind; to understand; to express (emotion, etc.)
heaven and earth; top and bottom
to bury (e.g. in the ground); to fill up (e.g. audience fills a hall); to cause to be packed; to plug (a gap); to stop (a gap); to make up for (a loss, shortage, etc.); to make amends
to have been decided (so) that; to have been arranged (so) that
body; physical system; (the) person
neighborhood; vicinity; environs; approaching
thief; robber; burglar; rebel; insurgent; traitor
when push comes to shove; when needed; when necessity arises; when the moment arrives
babysitting; babysitter; taking care of; assisting; assistant
another place; somewhere else; outside (one's family or group); someone else; not caring for; being indifferent to
to stay at (e.g. hotel); to be docked; to be berthed; to be moored
rest; break; recess; intermission
cracking sound (e.g. cracking one's knuckles); crunching sound
aeroplane; airplane; aircraft
invention; intelligent; clever; (arch.) making sense (of something); (arch.) understanding
warp (fictional faster-than-light spacecraft propulsion)
equipment; device; installation; stage setting
pattern; figure; state; condition; conjecture of the current situation; the way it seems; model
lodging; inn; house; home; home of a servant's parents (or guarantor, etc.)
wasteland; wilderness; deserted land; prairie; vast plain; wilds
talk (esp. by a talk-show host, or by a stage musician to the audience between songs); banter; talk show; toque
to trample; to crush underfoot
pillow; bolster; introduction (e.g. to a rakugo story); lead-in
to go to bed; to go to sleep; to fall asleep; to be laid up (with a cold); to be ill in bed