hard; solid; stiff; tight; strong; firm (not viscous or easily moved); safe
natural; reasonable; obvious; usual; common; ordinary
to freeze; to be frozen over; to congeal
right in the center (centre)
originator; ringleader; perpetrator; main culprit; person responsible
to step into (e.g. someone else's territory); to break into; to raid; to come to grips with; to get to the core of
one way or the other; either way
frost; white hair; grey hair; gray hair
to stick to; to cling to; to adhere to
friction; discord; strife
actually; really; truly; in practice; practically
it is ... that ...; precisely; although; while; it is precisely because ... that ...; only because ...
displeasure; discomfort; unpleasantness; indisposition; ailment
witnessing; observing; sighting
whether one likes it or not; willy-nilly
pessimism; negative thinking
encouragement (as an abstract concept); stimulation
to speak to; to give a (something) talk to; to speak words of (something)
reasonably; fairly; hurriedly; in a rush; approximately; about
capable of anything; liable to do
to be unable to understand; to baffle one's understanding; to be beyond one's comprehension
another place; somewhere else; outside (one's family or group); someone else; not caring for; being indifferent to
nonchalant; unconcerned; in a casual manner
quarrel; fight; trouble; dispute; friction; discord
ago; since; before; previous
unit; denomination; credit (in school); in units of (e.g. "in thousands"); in amounts of
medium; average; moderation; middle school; China; volume two (of three); during (a certain time when one did or is doing something)
carefree; buoyant; lighthearted; ease
to keep in contact (e.g. by phone, mail, etc.); to keep in touch
to lend; to loan; to rent out; to hire out
please; kindly; by all means; certainly; here you are; to give
consent; approval; acceptance; agreement; compliance
pecking order; hierarchical relationship; vertical relationship; hyponymy
attaching (documents, etc.); appending; affixing
button (clothing); push-button
tap; faucet; tapping (on a touchscreen); tap dance; tap (electrical)