business; task; use; purpose; for the use of ...; used for ...
guinea pig (Cavia porcellus); subject of an experiment; (human) guinea pig
free range breeding; pasturing; grazing; letting run free (dog, child, etc.)
to bite (at); to snap at; to snap at (someone); to flare up at; to jump down (someone's) throat
high-spec; highly competitive (on the dating scene, e.g. by having a high income, being good-looking); ticking all the boxes
going feral (of a species); reverting to wild; escape
to be unable to; to find difficult (unpleasant, awkward, painful) to do; to serve two or more functions or roles simultaneously; to contain (or combine) two or more features; to work in two or more jobs simultaneously (positions, etc.); to do alongside
confirmation; verification; validation; review; check; affirmation
several people; a few people
to be (in contrast to something that is not the case)
exactly; surely; right then; just then; just (about to); on the verge (of doing or happening)
omen; portent; sign; premonition; harbinger; precursor
to pass (of time); to elapse
two-digit number; "tens" column; two digits; double figures
three-digit number; hundreds column
to jump up; to spring up; to jump (market, price, etc.); to rise sharply; to act rashly; to jump the gun
potentiality; likelihood; possibility; availability
same; identical; equal; anyway; anyhow; in either case
illness (usu. excluding minor ailments, e.g. common cold); disease; bad habit; bad behaviour; crazy; insane
outbreak; spring forth; generation (e.g. of power or heat); genesis; ontogeny; development of complex multicellular structures from cell(s) in a simple state
infection; contagion; becoming infected
theory; reason; logic; (unreasonable) argument; strained logic; excuse
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
the number of people; many people; a large number of people; (counted as an) adult
impossible; unlikely; improbable
random; unintentional; unintended
target; object (of worship, study, etc.); subject (of taxation, etc.)
acting arbitrarily on one's own authority; acting arbitrarily without consultation
after; post; ex-; after the fact; ex post
processing; dealing with; treatment; disposition; disposal
how long; how much; to what extent
to be affected; to be influenced; to be concerned with; to have to do with; to stick to (opinions)
it does not mean that ...; I don't mean that ...; it is not the case that...
teacher; instructor; sensei; title or form of address for a teacher, master, doctor, lawyer, etc.; intimate or teasing form of address; (arch.) one's elder
hand; arm; forepaw; foreleg; handle; hand; worker
to trouble; to bother; to annoy
enough; sufficient; sufficiently; fully; division into ten
to be effective; to take effect; to work; to function well; to be possible (to do, use, etc.); to be able to