base (military, expedition, etc.)
purposely (of something needless, unexpected or seemingly counterproductive, etc.); daringly (doing something); not necessarily; not particularly; (arch.) definitely not
surface; face (i.e. the visible side of an object); front (of a building, etc.); obverse side (i.e. "head") of a coin; outside; exterior; appearance
(confronting a problem, etc.) head-on; directly; outright; (lit.) from the front
to go by; to go past; to run (between; of a rail service, bus route, etc.); to operate (between); to go indoors; to go into a room; to penetrate
shuddering; shivering; trembling; being horrified; being disgusted
obstruction; check; hindrance; prevention; impediment; interdiction
perhaps; possibly; maybe; if; in case; in the event that
trembling (with fear, anger, etc.); shivering (with cold); shaking; quivering
safe; secure; certainly; surely; no thanks; I'm good
superior; excellent; brilliant; outstanding
to declare; to assert; to state definitively; to finish saying; to say it all; to finish one's sentence
to make absolutely sure; to make doubly sure
unit; denomination; credit (in school); in units of (e.g. "in thousands"); in amounts of
renewal; update; innovation; improvement
head; brains; intellect; understanding
to look down on; to treat with contempt; to treat disparagingly; to sneer at
inexpensive; cheap; easy; simple
planning; devising (a plan); drafting; drawing up
to go through a bitter experience; to get into trouble; to get hurt; to feel pain
unreliable; uncertain; indefinite; unclear
organization; organisation; structure; construction; system (e.g. railroad, transport, party, etc.); tissue; texture (of a rock)
there is no need to ...; never happens; there is never a time when
flap (of an aircraft wing)
power; motive power; dynamic force; three-phase electricity
to be blurred (due to motion; of a photo, video, etc.); to be shaken (of a camera); to waver (in one's beliefs, policy, etc.); to shift (position); to be slightly off
grazing; skimming; almost touching; barely; just; narrowly
stall (in flying); downturn; slowdown; slump
to go down and stand; to alight; to get down