apprehension
anxiety or fear that something bad or unpleasant will happen
ceaseless
constant and unending
coo
make a soft murmuring sound
detritus
waste of any kind
dismount
alight from a horse, bicycle, or other thing that one is riding
flitter
move quickly in an apparently random or purposeless manner
gelid
icy, extremely cold
irrelevant
not connected with something
relentless
oppressively constant
reluctance
unwillingness or disinclination to do something
sheer
completely
shoal
a large number of fish swimming together
strut
walk with a stiff, erect, and apparently arrogant or conceited gait
submerge
cause to be under water
veer
change direction suddenly
viable
capable of working successfully
viral
of the nature of, caused by, or relating to a virus or viruses
wane
decrease in vigor, power, or extent
wreckage
the remains of something that has been badly damaged or destroyed