Little creature very hard on Adam (3)
I believe the answer is:
ant
'little creature very hard on adam' is the definition.
I know that 'little' relates to this answer.
'little creature very hard on adam' is the wordplay.
'little' means to remove the last letter (the word is not quite complete).
'creature' becomes 'ani' (ani is a kind of creature).
'very hard on adam' becomes 't' (I can't explain this - if you can you should give a lot more credence to this answer).
'ani' with its last letter taken away is 'an'.
'an'+'t'='ANT'
Can you help me to learn more?
(Other definitions for ant that I've seen before include "Colonial insect?" , "that may be a soldier" , "The insect lives in a social colony" , "Hill-dweller" , "one living in colonies" .)