Regularly ignored - I'm sorry - once cool African country (7)
I believe the answer is:
morocco
'african country' is the definition.
(country in Africa)
'regularly ignored i'm sorry once cool' is the wordplay.
'regularly ignored' indicates alternate letters (letters removed at regular intervals).
'im'+'sorry'+'once'+'cool'='imsorryoncecool'
The alternate letters of 'imsorryoncecool' are 'MOROCCO'.
(Other definitions for morocco that I've seen before include "Rabat its capital" , "state of Africa" , "Country in North Africa" , "North African country - leather" , "Fine soft leather from goatskin" .)