Extend a period of validity (5)
I believe the answer is:
renew
(Other definitions for renew that I've seen before include "Make afresh" , "Reinforce" , "Revive" , "Regenerate" , "Restore - recommence" .)
I believe the answer is:
renew
(Other definitions for renew that I've seen before include "Make afresh" , "Reinforce" , "Revive" , "Regenerate" , "Restore - recommence" .)