valid

As adjectives the difference between valid and meaningful

is that valid is valid while meaningful is having meaning, significant.

As adjectives the difference between valid and illegitimate

is that valid is well grounded or justifiable, pertinent while illegitimate is illegal; against the law.

As an adjective valid

is valid.

As a verb proved is

(prove).

As a verb justify

is to provide an acceptable explanation for.

As an adjective valid is

valid.

As adjectives the difference between viable and valid

is that viable is able to live on its own (as for a newborn. while valid is well grounded or justifiable, pertinent.

As adjectives the difference between guilty and valid

is that guilty is responsible for a dishonest act while valid is valid.

As a noun guilty

is (legal) a plea by a defendant who does not contest a charge.

As adjectives the difference between valid and adequate

is that valid is well grounded or justifiable, pertinent while adequate is equal to some requirement; proportionate, or correspondent; fully sufficient; as, powers adequate to a great work; an adequate definition lawfully and physically sufficient.

As a verb adequate is

to equalize; to make adequate.

As adjectives the difference between valid and convincing

is that valid is well grounded or justifiable, pertinent while convincing is effective as proof or evidence.

As a verb convincing is

present participle of lang=en.

As an adjective valid

is valid.

As a noun verification is

verification.

Generous is a related term of valid.

As adjectives the difference between generous and valid

is that generous is (obsolete) of noble birth while valid is valid.