to crowd; to flock; to swarm
habit; behavior; behaviour; trait
firm; strong; solid; stable
class; heading; group; category
nesting hole; burrow; den
cave-in; collapse; sinking; depression (e.g. of the skull); subsidence
to get stuck in; to be mired in; to be addicted to
weight; weight (e.g. of someone's words); burden; importance; significance
land route; overland route; by land; overland
customer traffic; customers; custom
worry; fear; anxiety; concern
immediate; prompt; quick; rapid; urgent; pressing
nice; likeable; desirable
to carry off; to run away with; to sweep away; to take entirely for oneself; to monopolize
not funny; not a laughing matter; not a joke
since when; from when; how long
even; (if) only; just; besides; on top of that
after (practically) no time; immediately after; just; having no time to
one's house; one's home; one's family
drinking water; potable water
morning; forenoon; just before noon
being quick-eared; having sharp ears; being first to know about something
excavation; exhumation; discovery (e.g. new talent)
eggs; egg; (hen's) egg; (an expert) in the making; beginning; origin
correct; right; correct interpretation (answer, solution)
breeding; multiplication; increase; propagation; reproduction
early (prompt) settlement; swift resolution; speedy solution
to desire; to wish for; to expect; to see; to command (a view of)
setting (someone) to work; employment; using; causative (verb, etc.)
painful; sore; cringy; embarrassing; exceeding
requital of a favour (favor); repayment (of an obligation, kindness, etc.)
even if; even though; however; no matter how
to take offense (at); to take offence (at); to feel hurt (by)
to step forward; to take a step forward
new registration; registering for the first time
to soar; to fly high; to be whirled up; to make merry; to be ecstatic; to be in high spirits
character (esp. kanji); letter; handwriting; penmanship; the ... word (e.g. "the L word" = "love")