Learn That Word

Synonyms for Okay (same or very similar meaning)

WordNet sense 1 (an endorsement):
o.k., okeh, okey, ok

WordNet sense 2 (being satisfactory or in satisfactory condition):
fine, hunky-dory, fine, all right

WordNet sense 3 (giving satisfaction):

WordNet sense 4 (give sanction to):
approve, sanction

WordNet sense 5 (in a satisfactory or adequate manner):

From the ODE community, based on WordNetadd/edit