Like overdue birthday wishes (7)
I believe the answer is:
belated
(Other definitions for belated that I've seen before include "Bleated, being overdue" , "delayed" , "Bleated, being too late" , "After due time" , "Coming too late" .)
I believe the answer is:
belated
(Other definitions for belated that I've seen before include "Bleated, being overdue" , "delayed" , "Bleated, being too late" , "After due time" , "Coming too late" .)