vacuum; absolute void; complete vacuity
tying up; binding; total; sum; conclusion (e.g. of a gathering); end; final meal after a drinking party
empirically; from experience
patient; sufferer (of an illness)
respiratory tract; air duct
death by suffocation; death by choking
to be in danger of; to be liable to; to be at risk of
closing (for the day; of a library, museum, cinema, etc.); closing down (of a library, museum, cinema, etc.)
authorities; relevant authorities; authorities concerned; this office
malicious; vicious; malignant; shoddy; inferior; poor-quality
in the same breath; hardly had the words been said
insole; (shoe) insert; intermediate layer; rug; carpet
secret savings; secret stash; money hidden away
slowly; leisurely; gently; suddenly; abruptly
round coin with a (square) hole in the center; coin made of non-precious materials; money
bright sunshine; broad daylight
couch; bench; ottoman; settee
hereabouts; around there; that area
northern limit (esp. of the distribution of a plant or animal)
old friend; old acquaintance
businessperson; businessman; businesswoman; entrepreneur; captain of industry
index; indices; indicator
stagnation; deposit; sediment; faltering; hesitation; pause
base (of a polygon); bottom (of the social scale); lower levels; base (e.g. of support); foundation
complication; confusion; disorder; chaos; dispute; conflict
undertaking; underwriting; acceptance
immediate reply; quick answer; ready agreement
remuneration; recompense; reward; toll
British pound; pound sterling; GBP
in a great quantity; plentifully; greatly
advance payment; money paid in advance
half the amount (of money); half price; half fare
leaving (a decision, job, etc.) to someone else; entrusting; leaving the choice of a meal to the chef; omakase
conditional; qualified; with conditions attached
reservation; putting on hold; deferment; withholding
approval; agreement; support; favour; favor
solution; solution strategy
gambling; gaming; speculation; undertaking a risky venture; (arch.) professional gambler; (arch.) gamester
fourth rank; fourth class; fourth sign of the Chinese calendar; Denmark
to assume an air of ...; to act ...; to affect ...; to put on airs; to be self-important
from out of nowhere; from who knows where
have no relation to; have no luck with; not be fated to