valid; proper; right; appropriate; reasonable
time; season; period; phase; stage
at the most; at best; to the utmost; as much as possible; as much as one can
to polish; to shine; to burnish; to refine (a skill, etc.); to improve; to hone
firm promise; definite promise
to be surprised; to be amazed; to be frightened; surprise (e.g. surprise party)
physiological phenomenon; physiological response
thin; skinny; delicate; fragile; feeble
miserable; wretched; unhappy; sad; pitiable
healthy; sound; wholesome
something; something or other; so-and-so; somehow (handling, dealing with something); anyhow; one way or another
to work too hard; to try too hard; to strain oneself; to overdo it; to go too far
consultation; discussion; discussing; asking (someone) for advice
that's good; that's nice; like (on social media); is that clear?; OK?
cheerful; lively; lighthearted
to refuse; to decline; to deny
there's no (other) way; cannot be helped; unavoidable; it's no use (doing); pointless; hopeless (person)
level; standard; level (amount or quantity); level (plane); level (instrument); spirit level
April; fourth month in the lunar calendar
just the other day; quite recently
promotion (school, military, etc.)
to stay indoors; to be confined indoors
in an instant; in a flash; in the blink of an eye; in no time at all; just like that
Golden Week; string of public holidays in late April-early May
circle; entirety; whole; money; dough; enclosure inside a castle's walls; soft-shelled turtle
to cross over; to go across; to extend; to cover; to range
significant; useful; meaningful; worthwhile; valuable; of interest
when it comes to; concerning (an area of expertise)
unsurpassable; peerless; having no equal; outclassing (others)
homeroom; form room; form class
the very start; the very beginning
implicitly; indirectly; tacitly; by implication; obscurely
in any case; regardless; either way; since it makes no difference anyway (you might as well ...); since it won't change the outcome; if you are doing it regardless
(one's) sleeping hours; hours of sleep
challenge; defiance; dare; attempt; try
proper; respectable; decent; honest
circumstances; condition; arranging; managing; lending money; raising money
since one was born; in one's (entire) life; in all one's life
part-time job; side job; part-time worker; part-timer
there is no way that ...; easy; simple