Gloomy? Dicky calls her up (10)
I believe the answer is:
sepulchral
'gloomy?' is the definition.
(sepulchral means tomb-like)
'dicky calls her up' is the wordplay.
'dicky' is an anagram indicator (dicky can mean not functioning properly).
'calls'+'her'+'up'='callsherup'
'callsherup' anagrammed gives 'SEPULCHRAL'.
(Other definitions for sepulchral that I've seen before include "offering gloomy tones" , "from the grave" .)