imperviable
impervious
Christophany
Ditto copy
Photostat
Satanophany
Xerox
Xerox copy
absolute indication
account
acid test
acquaintance
affirmation
airtight
ammunition
angelophany
announcement
appearance
argument
assay
attestation
authentication
avatar
backing
backing up
ballproof
basis for belief
bearing out
blank determination
blue
blue book
blueprint
body of evidence
bolstering
bombproof
briefing
bring out
brouillon
bulletin
bulletproof
burden of proof
burglarproof
buttressing
certification
chain of evidence
circumstantiation
clue
cold-type proof
color proof
communication
communique
proof sheet
prove
alter
amount
ascertain
assure
change
check
control
create
ensure
insure
knead
make
measure
modify
photographic print
print
produce
quantity
see
see to it
work
proofed
proofing
proofs
probe
-ways
actions
advantage
ancient
conviction
degree
demonstration
dozen
evidence
explanation
fact
fish
four
groups
illustration
impression
independence
indication
knowledge
loving
method
mine
necessity
next
possession
sense
ship
silence
straw
subject
success
testimony
three
utility
what
yourself
aloof
goof
hoof
poof
roof
rustproof
spoof
woof