technical (e.g. discussion); exclusive; professional
related to; in relation to; as far as ... is concerned
riddle; puzzle; enigma; enigmatic; mysterious
spell; charm; incantation; magic word
barrier; protective wall; obstacle; hindrance; imaginary shield that gives one invincibility or immunity
slowly; unhurriedly; easily (e.g. in time); well; well (e.g. sleep); comfortably
to rest; to suspend; to give relief
cooperation; collaboration
prefix for forming ordinal numbers
gate (for entry, boarding, etc.); gate; logic element
to be reflected; to harmonize with (harmonise); to come out (photo); to be projected; to be displayed (on a screen)
to change; to exchange; to convert; to renew; to throw a switch; to replace
to be brought forward (e.g. by three hours); to be moved up; to be hasty; to be rash; to quicken; to speed up
may; might; perhaps; may be; possibly
how long; how much; to what extent
price; cost; value; worth; value
is it?; isn't it?; be; is
futility; waste; uselessness; pointlessness; idleness
to resign; to retire; to quit; to leave (one's job, etc.)
disagreeable; detestable; unpleasant; reluctant
duty; obligation; responsibility
simulation; simulation (of a foul); diving; flopping
to cure; to heal; to fix; to correct; to do over again; to replace
muscle; tendon; vein; artery; fiber; fibre; line
easy; likely to ...; have a tendency to ...; easy to ...
suit (clothing); suit (playing cards)
operating together; working together; being linked (to); being tied (to); being connected (with); interlocking
power; might; authority; influence
calculation; reckoning; count; forecast
to be handed down; to be introduced; to be transmitted; to be circulated; to go along; to walk along
device; contrivance; trick; trap; (small) scale; half finished; commencement
combat; battle; action; active service; actual fighting
thanks; gratitude; manners; etiquette; bow; reward; gift
beginning; start; first (in line, etc.); origin; such as ...; not to mention ...
dull (e.g. a knife); blunt; thickheaded; obtuse; dull (sound, color, etc.); dim (light)
to defend oneself; to protect oneself
coincident with; while; simultaneously