depending on the situation; should time and circumstances permit
to do without being seen (by); to do behind (someone's) back; to do without the knowledge of (e.g. one's parents)
leftovers; remains; leavings; remnant; surplus
chopped kabayaki eel on rice; eel fillets cooked over charcoal with soy flavoured sauce, cut in small pieces and served on rice
canteen; flask; water bottle; thermos
perfect; complete; thorough; leaving nothing to be desired; more than satisfactory
reward; prize; treat; delight; small joy
depths; deep place; bottom (of one's heart)
to produce; to yield; to cause; to result from; to arise; to be generated
valuable; worthwhile; worthy; worth doing
bang on the money; spot on; right answer
expectation; anticipation; forecast
jumping sideways; flying sideways; running hurriedly (with one's body bent forward)
doubting; questioning; being skeptical (of)
authority; expert; counter for messages, letters, notes, documents, etc.; understanding (esp. of male-female relations); tact; supernatural powers
box; container; box (in a theatre); booth (in a restaurant, etc.); small rectangular building (e.g. telephone box); rectangular field area (e.g. batter's box, catcher's box); box (calfskin)
season (for fruit, seafood, etc.); best time of the year (for); in vogue; popular; hot
rapid increase; sharp rise; proliferation; surge; explosion
whole passage; full text; whole sentence; full paragraph
cannot be compared (with); being no match (for)
emoji; pictorial symbol; pictograph; ASCII art
hard-to-forgive; intolerable; inexcusable; unpardonable
leaving someone behind; abandoning someone; marooning someone
laughing oneself into convulsions; splitting one's sides laughing; rolling with laughter
thermal runaway; overheating
(one's) sleeping hours; hours of sleep
excellent; superb; first-rate
one copy (of a document); one letter; one-way traffic; pure straight; winning hand containing nine consecutive tiles of the same suit (i.e. 1-9)
attention; giving one's attention; focusing
putting together (e.g. opinions); gathering; collecting; aggregating; summarizing; integrating
sharing with others what has been given to you; sharing a portion of the profit with others
possession; retention; maintenance; holding; keeping
entrusting (everything to); leaving (a matter) entirely with
farming out (all of a project) to subcontractors; hundred-percent outsourcing; leaving (a responsibility) entirely to someone else; offloading (a problem, work, etc.); wholesale delegation
to break down due to overwork; to try so hard that the situation gets worse
all one's life; throughout one's life; as long as one lives
a mere ...; only a ...; insignificant
dark clouds gather; threatening signs emerge; trouble is afoot
state of mind; mental state; mental attitude
growing child's hearty appetite
to work too hard; to try too hard; to strain oneself; to overdo it; to go too far
shortcut; taking a shortcut; (keyboard) shortcut; short-cut hairstyle for women
incomparable; cannot compare (with); beyond comparison; in another league