Sort of speech perhaps too sloppy (10)
I believe the answer is:
apostrophe
'sort of speech' is the definition.
(apostrophe can mean an spoken address to a person)
'perhaps too sloppy' is the wordplay.
'sloppy' is an anagram indicator.
'perhaps'+'too'='perhapstoo'
'perhapstoo' anagrammed gives 'APOSTROPHE'.
(Other definitions for apostrophe that I've seen before include "It may be superfluous on tradesman's sign" , "in Charley's Aunt ?" , "rhetorical digression" , "Single quote mark" , "Where character may be absent" .)