Excite one new learner in renown (7)
I believe the answer is:
inflame
'excite' is the definition.
(I've seen this before)
'one new learner in renown' is the wordplay.
'one new' becomes 'in' (I've seen this in other clues).
'learner' becomes 'l'.
'in' indicates putting letters inside.
'renown' becomes 'fame' (synonyms).
'l' going into 'fame' is 'flame'.
'in'+'flame'='INFLAME'
(Other definitions for inflame that I've seen before include "Be provocative" , "Intensify, aggravate" , "fan" , "Provoke to anger" , "Bother" .)