distinction; difference; separate; different; exception; exclusion
it's best to; it's safest to; there's nothing better than
extremely important; essential; vital; crucial
transient (symptom, phenomenon); temporary; passing; fleeting
throughout; over a period of ...; over a span of ...
to affect; to impact; to influence
riskiness; (level of) danger
being familiar with; having a thorough knowledge of; being well-informed about
halfway-done; mediocre; uncertain; half-heartedly; insufficiently
to apologize; to apologise
staringly; fixedly; unblinkingly
cruel treatment; raw deal; kick in the pants
idea; conception; way of thinking; approach; expression
the past; bygone days; one's past (that one would prefer remained secret); past (tense); preterit; previous life
quarrel; brawl; fight; squabble; scuffle; argument
from the beginning; without hesitation; flatly (e.g. refusing); entirely; completely
entirely; completely; cleanly; snugly
to come out (e.g. hair); to fall out; to collapse (e.g. building, floor); to be left out; to be omitted
to arrive at (e.g. a decision); to reach (a stage); to lead to (a place); to get to; in the extreme case of; (arch.) to come
in any way; to some extent; even if only a little
willpower; energy; vitality
to grow hot (e.g. water); to boil; to get excited (at); to erupt (in applause, cheering, etc.); to ferment; to melt (of metal)
to be convinced (that); to be under the impression (that); to make up one's mind; to set one's heart on; to be obsessed (with a thought, idea, etc.); to think about obsessively
childhood friend; friend from infancy; old playmate
one's last moment; one's death; one's end
unbearable; intolerable; unendurable
bonds (between people); (emotional) ties; relationship; tether; fetters
special someone; special person; precious one; significant other
from the bottom of one's heart; heartily; sincerely
painful; being sorry; feeling sorry
circumstances; conditions; situation; reasons; state of affairs
to bear a grudge against; to resent; to blame; to curse; to feel bitter towards
(not) at all; (not) in the least; (none) whatsoever
sidelong glance; flirtatious glance
unpleasant; disagreeable; displeasing; uncomfortable; unhappy
to give a warning; to remind (a person) of
to hand over; to transfer; to give up (e.g. one's seat); to give way; to yield; to concede
and so; therefore; for that reason
to be idle; to slacken; to neglect (e.g. one's work)
if you think about it; come to think of it
if you don't mind; if you like; if you feel up for it; if you're interested
definite; final; decisive; conclusive