know, 
identify, distinguish, make out, be familiar with, be aware of, be acquainted 
with, be on familiar terms with, diagnose, spot 
accept, 
acknowledge, appreciate, understand, admit, comprehend, concede, grant, realize, 
see, agree
antonym: deny
 
acknowledge, 
credit, cherish, value, have appreciation for, attach importance to, be grateful 
for, be thankful for