fall; drop; descent; coming down
drone; unmanned aircraft; drone
robot; (mere) puppet; pawn; figurehead
search; lookup; hunt; (item of) research; exploration; investigation
start; commencement; beginning; initiation
February; second month of the lunar calendar
three; three years of age
distinction; difference; separate; different; exception; exclusion
analysis; analytical study; parsing; parse
bubble; foam; froth; suds; lather; head (on beer)
form; shape; state; condition; letter; correspondence
many; numerous; large amount of; large quantity of; frequent; common
to hold (in one's hand); to take; to possess; to have; to maintain; to keep; to last
seeming ...; appearing ...; -ish; like a ...; typical of ...
origin; source; history; originally; from the start; by nature
expectation; anticipation; hope; promising; rising; up-and-coming
first (of all); firstly; probably; most likely; more or less (satisfactory); on the whole
cutting; severance; section; amputation; disconnection
interior; inside; internal
not yet known; unknown; strange
first report (esp. of an incident or news story); initial report
excitement; stimulation; agitation; arousal
but; however; (and) yet; nevertheless; still; for all that
end; conclusion; last; final; once ...; the moment ... (, that's it)
research institute; (research) laboratory
silence; being silent; quiet; reticence; inaction
what; you-know-what; that thing; whatsit; whachamacallit; penis; (one's) thing
endorsing and questioning the preceding statement; lamenting reflections on the preceding statement
doubt; question; suspicion; dubiousness
dispatch; despatch; deployment; temporary employee (esp. from an agency); temporary worker; agency temp
inquiry commission; enquiry commission; research group
bacterium; bacteria; germ
to understand; to comprehend; to become clear; to be known; I know!; I think so too!
living thing; organism; creature; biology
unidentifiable; unidentified
something; some; somehow; for some reason; (so) what (are you trying to say)?; what (do you mean)?