WordNet sense 1 (having worth or merit or value):

worthful

WordNet sense 2 (having worth or merit or value; being honorable or admirable):

worthy

WordNet sense 3 (held in great esteem for admirable qualities especially of an intrinsic nature):

valued

WordNet sense 4 (of great worth or quality):

rich

WordNet sense 5 (of high worth or cost):

precious

WordNet sense 6 (having incalculable monetary, intellectual, or spiritual worth):

invaluable