invalidate
- verb (v)
Meaning: render null and void
Synonyms:
abate
abolish
abrogate
annihilate
annul
blow sky-high
cancel
circumduct
counteract
counterbalance
disannul
discredit
disqualify
impair
negate
negative
neutralize
nix
nullify
offset
overrule
overthrow
quash
refute
revoke
shoot full of holes
undermine
undo
unfit
weaken
x-out
Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.