interior; backwoods; hinterland; back regions
to lose; to miss (a change, opportunity); to lose (a loved one); to be bereaved of; to concede (goals, points, etc.)
coincident with; while; simultaneously
witnessing; observing; sighting
rate; ratio; proportion; percentage
investigation to determine the cause (of); tracing something back to its origin
pressure; urgency; tension; imminence; acuteness
nature (of a person); sex; gender; sex (i.e. sexual attraction, activity, etc.); gender; -ty
fall; decline; lowering; deterioration; degradation
clue; lead; key; handhold; hold
hardly any; almost nonexistent; very little
trace; vestige; mark; sign; evidence
to leave (behind); to leave (undone); to not finish; to save; to set aside; to leave (to someone, esp. after one's death)
ice; shaved ice (usually served with flavored simple syrup)
theory; doctrine; opinion; view; rumour; rumor
influential; prominent; strong; likely; plausible
conclusive evidence; positive proof; definite proof; confirmation
unidentified flying object; UFO
collision; crash; running into; conflict; quarrel; clashing
astounding; tremendous; crazy; exorbitant
anyhow; anyway; somehow or other; apart from ...; setting ... aside
will; probably; may; I think; surely; I hope
more or less; though not quite satisfactorily; tentatively; for the time being; just in case; once
scientific basis; scientific foundation; scientific grounds
various; varied; diverse; all sorts of
various opinions; various theories; various rumors (rumours)
to fly about; to flutter about; to flit about; to fly past each other
to compare; to make a comparison; to compete; to vie
small; little; slight; below average (in degree, amount, etc.); low (e.g. sound); soft (e.g. voice)
worst; horrible; horrid; in the worst case; if worst comes to worst
zero; 0; nought; nothing; zilch
I fear that it's likely that; with all due respect
10,000; ten thousand; myriad; everything; all; (arch.) various
correspondence; communication; transmission; news; signal; telecommunications
through; throughout; through (the good offices of); by way of
indication; denotation; designation; instructions; directions
to let fly; to make fly; to skip over; to leave out; to run fast; to drive fast; to spray
official name; formal name
performance; execution; skill; dexterity; tact
good; excellent; sufficient; enough; profitable (deal, business offer, etc.); beneficial
siege; encirclement; envelopment; surrounding; besiegement
later on; subsequently; by and by; after a while