optimization; optimisation
to fight (with); to cross swords; to compete (with); to argue (with); to have an argument; to have a dispute
sense of guilty pleasure; feeling of naughtiness
everyone; each and every one (of you); ladies and gentlemen
usual; normal; long (of time); old; for a long time; for a while
nonparticipation; nonattendance
not yet fixed; undecided; pending; TBD
to mark a correct answer with a circle
dark clouds; threatening signs; ominous indications
to crack (person's voice); to squeak
to fall and pile up (e.g. snow); to lie thick
to cover; to hide; to conceal; to wrap; to disguise
(meeting with) disaster; (having an) accident; mishap; shipwreck; distress
to sprinkle (of rain, etc.)
(not) a soul; (not) a single person
white ball (baseball, golf ball, etc.)
to pile up; to accumulate; to estimate
penetration; permeation; transmission
entirely; completely; all; nothing but
to enter into a person's feelings; to guess what someone feels (using one's intuition)
going out; outing; leaving (one's home, office, etc.)
independent action; acting alone
to tremble violently; to shudder up; to shake
free (of restraint, controls, etc.); free (of charge); freelance; independent; freelancer; one-size-fits-all; free skating
library (usu. single-room); small library
gently sloping; gentle; gradual; smooth (process); gentle (e.g. tone of voice); slow (e.g. growth)
standing tall; towering; soaring
dust; small debris (e.g. dirt, crumbs); trash; garbage; negligible amount; tiny bit
wooden mosaic work; parquetry; wooden mosaic (e.g. on a piece of furniture); marquetry; marqueterie
glazing; fitting with glass; transparency; openness; lack of secrecy
counter for books; volume
staff member; employee; worker; personnel
strange tale; curious report; strange report