More suitable (5)
'more suitable' is the definition.
(more apt)
This is the entire clue.
(Other definitions for apter that I've seen before include "Fitter" , "More suitable - prate (anag)" .)
(Other definitions for better that I've seen before include "More acceptable" , "Recovered from illness - more satisfactory" , "Superior of two alternatives" , "One may lay" , "Improve upon" .)
'more suitable' is the definition.
('fit' can be similar in meaning to 'suitable')
This is the entire clue.
(Other definitions for fitter that I've seen before include "Mechanic" , "Worker assembling machinery - more healthy" , "less likely to feel fatigue" , "better equipped" , "A skilled technician" .)