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Adjective:
on trial
In the
process
of being
tested
or
tried
"The new
drug
is
currently
on
trial
in
several
hospitals
"
See also:
unproved
,
unproven
on the up-and-up
on the verge of
on the way
on the whole
on the wing
on thin ice
on time
on top of the world
on tour
on track
on trial
on your guard
on/off switch
onager
Onagraceae
on-air
onanism
onanist
onboard
onboarding
once