expect the unexpected
eventuality
come what may
unexpectable
possible
thief in the night
nonincidental
nonshock
fortuity
expectable
chance event
nonodd
unstartling
unsurprising
accident
nonshockable
stroke
corner case
racing certainty
nonincident
unfrightening
nonfrightening
blow high, blow low
even money
nonrare
unanticipatedly
noncoincidental
uncoincidental
surpriseless
eventlessly
nonabnormal
unparadoxical
barring
unbizarre
nonparadoxical
unsurprised
nonweird
nonsurprise
unstrange
nonstrange
ununusual
spell
unastonished
uncurious
noncoincident
never say never
lightning never strikes twice in the same place
nonaccidental
shenanigans
shockless