certain; sure; definite; reliable; sound; solid
absorption; suction; attraction
bad(-tasting); unpalatable; poor; unskillful; ugly; unattractive
to run away; to flee; to avoid (a question, responsibility, etc.); to evade; to win without being overtaken; to hold off the other contenders (until the finish)
underground; below the ground; world of the dead; the grave; underground (activities, movement, etc.); secret
hall; saloon; spacious room; reception room
cave-in (in a mine or tunnel); roof collapse; rockfall
extreme; ultra; mega; damn; stupid; cursed
red; crimson; scarlet; Red; communist
four-handed performance (on the piano)
hard; solid; stiff; tight; strong; firm (not viscous or easily moved); safe
what's the best thing to do?; what to do?
lump of ice; block of ice; ice floe
opening fully; full throttle; full power
preventing (someone) from leaving; confinement; keeping indoors; being stranded; grounding
unreasonable; unnatural; impossible; forcible; forced; excessive (work, etc.); immoderate
had better ...; had better not ...
strength; intensity; strong (e.g. glasses); powerful (e.g. lens); intense (e.g. fear)
weak point; weakness; shortcoming; defect; flaw; sore spot
it cannot be helped; there's nothing for it; it's no use fighting back; it's hopeless; there is no way out of it
probably; likely; perhaps; a lot of; much; many
to recall; to remember; to recollect
to break (into pieces); to be broken; to collapse; to crumble; to become less formal; to throw off reserve
ball; sphere; bead (of sweat, dew, etc.); drop; ball (in sports); pitch (e.g. in baseball); pile (of noodles, etc.)
stone (of a fruit); pit; core (of an organization, team, etc.); nucleus; nuclear weapons; nucleus (of an atom); nucleus (of a cell)
to be sharp; to be keen; to be on the ball; to have a mind like a steel trap; to be clever
once; before; formerly; never yet; never before; first time
engine; agency; organisation; system; facility
old; former; the old; old things; old times; bygone days
(archeological) remains; ruins; relics
inquiry commission; enquiry commission; research group
to examine; to look up; to investigate; to check up; to sense; to study
of course; certainly; naturally
collapse; crumbling; breaking down; (radioactive) decay; disintegration
fresco; mural; wall painting
record; document; minutes; record (e.g. in sports); setting (a record); recording (a record high, etc.)
as usual; as always; as before; as ever; still
to copy (down); to transcribe
thousand years; millennium; (fig.) long time
riddle; puzzle; enigma; enigmatic; mysterious
to write down; to note down; to mention; to describe; to inscribe; to mark
may; might; perhaps; may be; possibly
unfortunately; regrettably
regarding ...; concerning ...; about ...; on ...; with respect to ...; in regard to ...