Article by little sister in academic submission (6)
I believe the answer is:
thesis
'article by little sister in academic submission' is the definition.
'thesis' can be an answer for 'article' (thesaurus). I'm not certain of the 'by little sister in academic submission' bit.
'article by little sister' is the wordplay.
'article' becomes 'the' (the definite article in English).
'by' means one lot of letters go next to another.
'little sister' becomes 'sis' (synonyms. I am not sure about the 'little' bit.).
'the'+'sis'='THESIS'
Can you help me to learn more?
(Other definitions for thesis that I've seen before include "theory" , "Subject" , "He sits (anag) - treatise" , "Theme for an essay" , "Researched dissertation" .)