VERBS

be
become
remain, stay
deem sth, hold sth
The original written contract was held valid

ADV

still
Is your passport still valid?
no longer
legally
Is the contract legally valid?

PREP

for
Vouchers are only valid for races taking place before 31 December

VERBS

be, seem
become
remain
accept sth as, consider sth, deem sth, regard sth as
We accepted several different approaches as valid

ADV

extremely, very
absolutely, completely, perfectly
This is a perfectly valid question to raise
not entirely
reasonably
equally
using a different, but equally valid, technique
universally
a universally valid set of moral principles
not necessarily
not strictly
That argument is not strictly valid in this case
still
no longer
The old assumptions are no longer valid
logically, scientifically, statistically
a logically valid deduction