I shall and will show hostility (3,4)

I believe the answer is:

ill will

'hostility' is the definition.
(synonyms)

'i shall and will' is the wordplay.
'i shall' becomes 'ill' (contraction of 'I will').
'and' says to put letters next to each other.
'ill'+'will'='ILL-WILL'

'show' acts as a link.

(Other definitions for ill will that I've seen before include "Hostility, malevolence" , "Malice - unfriendliness" , "Bitterness" , "Enmity" , "Positively unfriendly disposition" .)

I've seen this clue in The Globe and Mail.

Want a hint initially instead of a full solution? Install my app