Very tight, is liable to hurt (6)
I believe the answer is:
stingy
'very tight' is the definition.
'stingy' can be an answer for 'tight' ('stingy' can be similar in meaning to 'tight'). I am unsure of the 'very' bit.
'liable to hurt' is the wordplay.
'liable' becomes 'y' (I can't justify this - if you can you should believe this answer much more).
'to' is a charade indicator (letters next to each other) (I've seen this in other clues).
'hurt' becomes 'sting' (sting is a kind of hurt).
'y' put after 'sting' is 'STINGY'.
'is' is the link.
Can you help me to learn more?
(Other definitions for stingy that I've seen before include "'Mean, miserly (6)'" , "Having deep pockets but short arms?" , "Tight-fisted, like 25 and 22 Across" , "Mean, ungenerous" , "Tight with money" .)