undergird
underpin
buttress
vouch
evidence
warrant
evidenced
evidentiate
support
bear out
corroborate
a posteriori
underwrite
vindicate
flag-waving
show
countersupport
validate
prove
testify
defend
bear witness
tell
uphold
documentable
arguable
reason
truss
back
demonstrate
throw one's weight behind
certify
make for
attest
manifest
speak to
provenance
underhold
take someone's part
rest
arguably
attested
stand behind
gun
justificate
underset
take up for
stut
justificative
frontlash
stand
bear
vindicatory
justificatory
pedestal
supportive
sell
you bet
sustain
doubting Thomas
run with the hare and hunt with the hounds
hang one's hat on
base
averment
foundationalist
tenable
well-founded
evidencer
evidentialist
strengthen
substantiative
testimony
confirmative
take a stand
confirming
collateral
substantiating
brace
establish
in the light of
confirmatory
corroborative
evidentiary
corroboratory
testimonial

English words for 'To give fundamental support; provide with a sound or secure basis; provide supportive evidence for.'

As you may have noticed, above you will find words for "To give fundamental support; provide with a sound or secure basis; provide supportive evidence for.". Hover the mouse over the word you'd like to know more about to view its definition. Click search related words by phrase or description. to find a better fitting word. Finally, thanks to ChatGPT, the overall results have been greatly improved.

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