spare time; free time; time (e.g. time it takes to do something); time off; day off; quitting (one's job); firing someone
invincible; unrivaled; unrivalled; matchless; unbeatable; undefeatable
to soak; to dip; to steep; to moisten; to wet
seedbed; nursery; seed-plot
circumference; outskirts; environs; (computer) peripheral
variation; rogue (something)
explosive; sudden and dramatic (of an increase in sales, popularity, etc.); explosive; rapid
predation; eating prey; preying upon
increase; multiplication; propagation; proliferation
decomposition; putrefaction; putrescence; corruption; degeneracy; decay
energy; energy; strength; energy source; energy resource; food energy
switching off (e.g. electricity); turning off (e.g. water); off-season; offset; off-road; off-line; off (the price)
to feel like it; to get to think that way; to become so minded
extinction; annihilation; destruction
ease of use; user-friendliness; usability; utility; convenience
to sever; to cut off; to suppress; to eradicate; to abstain (from); to give up
approximately; about; promise; appointment; shortening; reduction
PET bottle (clear plastic beverage bottle)
container; receptacle; vessel; packaging
function; facility; faculty; feature
to get dirty; to become dirty; to become sullied; to become corrupted; to lose one's chastity
fault; defect; flaw; failure (in an examination); failing grade
advantage; point in favor; point in favour
exchange; conversion; replacement; switching (to); switchover
existence; being; survival; to exist; to live; to survive
to face (each other); to be facing; to be directed toward (the future, etc.); to be in response to; to receive (a client, etc.); to compare with
permanent; perpetual; persistent; lasting
start; commencement; beginning; initiation
to destroy; to overthrow; to wreck; to ruin
to go upstream; to go back (in time, to origin); to date back to; to trace back to
within; inside of; less than
(not) even when using ...; (not) even with the help of ...; (not) even by ...
to ascertain; to check; to make sure
delightful; joyous; joyful; happy; desirable; welcome
medicine; the healing art; healing; doctor