érvényt a kifejezésszótárban
ineffectual
infirm
invalid
null
unavailable
void
to annul
to cancel
to frustrate
to infirm
to invalidate
to null
to nullify
to overrule
to rescind
to set aside
to vacate
to void
annulment
cancellation
invalidation
recission
to make a petition
to send in a petition
to send up a petition