to be (of animate objects); to exist; to stay; to be ...-ing; to have been ...-ing
I wonder; should I?; is it?; I wish that; I hope that
human being; human; person; character (of a person)
to attack; to assail; to succeed (someone in a post, role, etc.); to make a sudden visit
extent; degree; limit; bounds; (span of) time; (a) distance; the state of
things like; something like; someone like; such a thing as; (the fact) that; to think that
of course; certainly; naturally
common sense; good sense; common knowledge; general knowledge; common practice; accepted practice
to think (about, of); to think over; to consider; to bear in mind; to think (that); to believe; to intend (to do)
to hear; to listen (e.g. to music); to ask; to enquire; to hear about; to hear of; to follow (advice, order, etc.)
called; named; as many as; as much as; all ...; every single ...
(wireless) transceiver; radio; walkie-talkie
voice; singing (of a bird); chirping (of an insect); voice; opinion (as expressed in words); sound; sense (of something's arrival)
goblin; apparition; monster; ghost; phantom; spectre
sound; noise; note; fame; Chinese-derived character reading
other (place, thing, person); the rest; outside; beyond; nothing except; nothing but
potentiality; likelihood; possibility; availability
whole; entirety; whatever (is the matter)
still; as yet; (not) yet; more; (more) still; at least
learned society; scientific society; academy; academic meeting; academic conference
also; too; not ... either; (it's not possible) no matter what; although one might wish otherwise
plants and animals; flora and fauna
to say; to utter; to name; to call; to go (e.g. "the alarm went ping"); to make a noise
and; besides; because; since; the thing is; for one thing
wherein; therein; thereinto
person; someone; human beings; mankind; human (Homo sapiens); (other) people; others
(not) at all; (not) in the slightest; wholly; entirely; extremely; very
wonderful; marvelous; strange; strangely enough; oddly enough; for some reason
nonexistent; not being (there); unowned; not had; unique; not; impossible
is not; am not; are not; isn't it?
even if ...; even supposing that ...; also as ...; also for ...; also from the position of ...
result; consequence; coming to fruition; bearing fruit; as a result; consequently
undiscovered; not found; unexplored
confirmation; verification; validation; review; check; affirmation
novice; beginner; starting to run; running off; running away
cryptid (unidentified mysterious creature); mythical beast