Is forced to leave the tea unfinished and to hurry (5)
I believe the answer is:
haste
'to hurry' is the definition.
(haste is hurrying or rushing)
'is forced to leave the tea unfinished' is the wordplay.
'is forced to leave' becomes 'has' (I can't justify this - if you can you should give a lot more credence to this answer).
'unfinished' means to remove the last letter.
'tea' with its final letter taken off is 'te'.
'has'+'te'='HASTE'
'and' acts as a link.
Can you help me to learn more?
(Other definitions for haste that I've seen before include "dispatch" , "''Marry in . . . . ., repent at leisure''" , "Expedition" , "Rapidity" , "Inconsiderate speed" .)