(not) even once; (not) ever
(always) having ready; having on hand; being provided with; standing; permanent; regular
advocate; disputant; debater; (present) writer; author
queer fellow; odd fellow; eccentric person; crank; oddball; freak
stinging (pain); smarting; tingling
to gasp for air; to pant; to be out of breath
none of your business; not your concern
to put to use; to make good use of; to exploit
practical; pragmatic; hands-on; nuts and bolts
fiction; made-up story; fable; fabrication; myth
companion; company; tritagonist; second supporting character
whether one likes it or not; willy-nilly
dispute; controversy; debate; argument; taking issue
to narrow; to reduce; to contract
British person; Briton; English person; Englishman; Englishwoman
erasure; deletion; elimination (of variables); extinction
inference; deduction; induction; reasoning
health management; health maintenance; health care
leap; jump; stepping out into the wider world; becoming active on a wider stage; rapid progress; dramatic development
reason; logic; method; system; order
in some cases; sometimes; on occasions
to guide; to lead; to show the way; to derive; to deduce
10,000; ten thousand; 10^4
understanding; comprehension; grasp; perception; appreciation; mastery (of an art or skill)
to abandon; to throw away; to discard; to forsake
degeneration; retrogression; atrophy; regression (e.g. of society); deterioration; degeneration
frail; having a weak constitution; being in poor health
root (of a plant); stump (of a tree); root (of a problem, etc.); base
what one desires; what one hopes for; suits me well; could ask for nothing better; bring it on
change in appearance; transformation
fixed number; certain number; given number; definite number
action; operation; process; agency; effect; function
hills and fields; hill and dale
sophism; chop logic; far-fetched argument; quibble; cavil; argument for argument's sake
study; scholarship; learning; discipline; branch of learning; (a) science
to defeat (someone) in an argument; to argue (someone) down; to confute (someone); to refute (someone)
course correction; trajectory change; orbital adjustment
high dimension; higher dimensions
objectivity; objective; object (philosophical)