Letter of completion, in brief (4)
I believe the answer is:
cert
(Other definitions for cert that I've seen before include "Safe bet" , "Sure thing (that could be dead!)" , "Sure thing (sl.)" , "Classification" , "Sure thing (colloq.)" .)
I believe the answer is:
cert
(Other definitions for cert that I've seen before include "Safe bet" , "Sure thing (that could be dead!)" , "Sure thing (sl.)" , "Classification" , "Sure thing (colloq.)" .)