Is half of North African dish underneath very sticky? (7)
I believe the answer is:
viscous
'sticky?' is the definition.
(synonyms)
'is half of north african dish underneath very' is the wordplay.
'half of' means to take half the letters.
'north african dish' becomes 'couscous' (I've seen this in another clue).
'underneath' is a charade indicator (letters next to each other) (in a down clue, some letters go under others).
'very' becomes 'v' (abbreviation).
'couscous' with half the letters taken is 'cous'.
'is'+'cous'='iscous'
'iscous' put after 'v' is 'VISCOUS'.
(Other definitions for viscous that I've seen before include "Thick, sticky (liquid)" , "Treacly" , "'Glutinous, sticky (7)'" , "Gelatinous" , "Thick and gluey, like heavy oil" .)