One fighting with a bigot, oddly lacking in educational basics (7)
I believe the answer is:
warrior
'one fighting' is the definition.
'with a bigot oddly lacking in educational basics' is the wordplay.
'with' becomes 'w' (abbreviation**).
'oddly lacking' indicates alternate letters.
'in' indicates putting letters inside.
'educational basics' becomes 'rrr' (the three R's: reading, writing, arithmetic).
The alternate letters of 'bigot' are 'io'.
'io' inserted inside 'rrr' is 'rrior'.
'w'+'a'+'rrior'='WARRIOR'
(Other definitions for warrior that I've seen before include "He's mighty in battle" , "Fighting soldier" , "Skilled, battle-hardened fighter" , "A man mighty in battle" , "Brave soldier" .)