Improvised (2,3)
(Other definitions for jammed that I've seen before include "Pressed tightly together, crammed" , "Played music" , "Stuck and immobilised" , "packed" , "Stuck and immobilized" .)
'improvised' is the definition.
('extemporise' can be a synonym of 'improvise')
This is the entire clue.
'improvised' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Another definition for adhoc that I've seen is " for this special purpose".)
'improvised' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for adlib that I've seen before include "not prepared for speech" , "wing it" .)
'improvised' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for ad lib that I've seen before include "Speak unpreparedly" , "Speak without planning or preparation" , "Off-the-cuff remark" , "Perform without a script" , "Extemporise" .)
'improvised' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for off the cuff that I've seen before include "Unofficially - improvised" , "without thinking" , "Where one may lose shirt button" , "From where you could lose a button" , "Improvised - extempore" .)