time of emergency; (in an) emergency
to rebound; to recoil; to splash; to have a repercussion; to have a reciprocal effect
following; pursuing; tracking; shadowing; tailing; chasing
bombing (shelling) the wrong target; (be killed by) friendly fire
fault; defect; flaw; failure (in an examination); failing grade
class; order; et cetera; etc.; equal; iso-
common; shared; to be common (to); to be shared (by); -wide
state (of mind); mental state; field (of activity); one's lot; circumstance; place
PvP battle; battle between human players (as opposed to AI)
to be tied together; to be connected to; to lead to; to be related to; to be related (by blood)
impossible; incapable (of doing); incompetence; inability; impotence; having no solution (of an equation)
degree of relative priority
offense and defense; offence and defence; batting and fielding
reaction; recoil; kick; backlash
optional; voluntary; arbitrary; arbitrary
minute adjustment; fine tuning
automatic pilot; autopilot; automatic control
pseudo; quasi; false; suspected (case, e.g. of disease)
colour; color; complexion; skin colour; look (on one's face); expression; appearance
short joke; quick one-liner
scattering; diffusion; spread (e.g. signal across the spectrum)
fatigue; weariness; exhaustion; tiredness
(just) making sure; just to be sure; just in case; for caution's sake
homeroom; form room; form class
topic; subject; much talked about; topical; in the news
ronin; masterless samurai; high school graduate waiting for another chance to enter university after having failed the yearly entrance examination; person out of work; jobless person; (arch.) wanderer
or rather (say); or better (say); or perhaps I should say; or, how should I put it,...; I mean
speciality; specialty; subject of study; expert; area of expertise
healthy; sound; wholesome
closing of a school; closed school
major incident; major happening; big scandal
due form; official; formality