to be careful; to pay attention; to take care
senior (at work or school); superior; elder; older graduate; progenitor; old-timer
boo! (sound used to scare someone); ugh (dissatisfaction, aggravation); ulp (consternation)
to be surprised; to be amazed; to be frightened; surprise (e.g. surprise party)
today; this day; these days; recently; nowadays
aeroplane; airplane; aircraft
fellow; mutual; companion; comrade
to make war (on); to wage war (against); to compete (against); to struggle (against adversities, etc.); to fight
fellow; guy; thing; object; he; she
interesting; fascinating; amusing; funny; enjoyable; fun
(not) at all; (not) in the slightest; wholly; entirely; extremely; very
reconnaissance plane; spy plane
small; fine; minute; minor; trivial; sensitive
generation; the world; the age
elbowroom; leeway; room; reserve; margin; allowance
seeming ...; appearing ...; -ish; like a ...; typical of ...
first; foremost; most important; best; greatest; above all
before the week is out; before the week is over; within the week; sometime this week
materials; data; document
to set one's hand to; to start work on; to embezzle; to use (money obtained in illegal fashion); to have sexual relations; to have an affair
what's what; heads or tails
degree; amount; grade; standard; of the order of (following a number); about
outside; exterior; the open (air); other place; somewhere else
dimly; faintly; absentmindedly; vacantly; idly; aimlessly
above; up; top; summit; surface; before; previous
that is so; that is right; it looks to me; people say that; it is said that; I hear that
outline; summary; overview; synopsis; abstract; abridgment
approximately; about; to (about) the extent that; (almost) enough that; as ... as ...; like
to be aware of; to know; to notice; to feel; to understand; to comprehend; to remember
terrible; dreadful; amazing (e.g. of strength); great (e.g. of skills); to a great extent; vast (in numbers)
(a) step; one step; level; stage; small degree; small amount
to approach; to draw near; to get close; to get acquainted with; to get closer to; to get to know
association of like-minded people
pluralizing suffix (esp. for people and animals; formerly honorific)
to digest; to break down; to break to pieces; to be able to use; to be good at; to finish; to complete
whether or not (in phrases like "I don't know whether or not I can come")
parent; parents; dealer (in cards, mahjong, etc.); banker; founder; inventor; (pet) owner
gulping down (a drink); guzzling; chugging; sloshing around (of liquid in one's stomach)
to gnaw; to nibble; to bite; to dabble in; to have a smattering of