difficult; tough; formidable; redoubtable; stubborn
medium (size); average (grade, level, etc.); in; within; during; while; currently (doing)
very interesting; of great interest
common; shared; to be common (to); to be shared (by); -wide
results; record; grades; marks
knowing how to swim with the tide; being good at dealing with things
rather than; more ... than ...
without (making) any mistakes; flawlessly; accurately
effort; exertion; endeavour; endeavor; hard work; striving
sleek; smooth; thin (of a liquid); without hesitation or delay
detective; investigator; sleuth; detective work; secret investigation
to deceive; to delude; to trick; to be as ... as ... (e.g. "as bright as day", "as beautiful as a rose")
amorous feelings; feeling of being in love
stale; hackneyed; clichéd
rise and fall; ups and downs; shame and glory; bright side and dark side; (lit.) light and shadow
to say enough (as much as required); to say plenty; to say well; to say cleverly; to say often; to say frequently
self-awareness; awareness (of one's position, abilities, duty, etc.); perceiving (something); taking in (a sensation); self-consciousness
what?!; what did you say?!; why?; what for?; anyone; anything
one side; one party; the other side; one (of a pair); the other (one); the mate
terrible; dreadful; terrifying; surprising; startling; tremendous
mouse; rat; dark gray; slate gray
to listen repeatedly; to listen again; to ask a question in return; to ask again; to ask for a repeated explanation
daring; fearless; intrepid; bold; tough
tragedy; tragic drama; tragic play; tragedy; calamity; disaster
direct connection; direct link
powerful medicine; strong poison
stimulant (e.g. psychoactive drugs like methamphetamine, ritalin, etc.)
intracerebral; inside the brain; (occurring) in the mind; mental (e.g. image); imaginary
composition; synthesis; composite photo; (function) composition
scary; frightening; eerie; dreadful
secrecy; confidentiality; privacy; one's circumstances (esp. fiscal)
for the present; for the time being; for a while (from now); for some time (to come)
beyond this point; ahead; from now on; after this; in the future
seed (e.g. of a plant); pip; progeny; offspring; paternal blood; lineage; sperm
to melt into; to dissolve into; to merge into; to blend into (surroundings); to fit in; to adapt to
terrible; dreadful; amazing (e.g. of strength); great (e.g. of skills); to a great extent; vast (in numbers)