1 To show to be real or true; to prove. [Obs.] Wouldst thou approve thy constancy Approve First thy obedience. Milton.
2 To make proof of; to demonstrate; to prove or show practically. Opportunities to approve . . . worth. Emerson. He had approved himself a great warrior. Macaulay. ‘T is an old lesson; Time approves it true. Byron. His account . . . approves him a man of thought. Parkman.
3 To sanction officially; to ratify; to confirm; as, to approve the decision of a court-martial.
4 To regard as good; to commend; to be pleased with; to think well of; as, we approve the measured of the administration.
5 To make or show to be worthy of approbation or acceptance. The first care and concern must be to approve himself to God. Rog
To make profit of; to convert to one’s own profit; said esp. of waste or common land appropriated by the lord of the manor.