pur ‧ pose ‧ ly /ˈpɜːpəsli $ ˈpɜːr-/ BrE AmE adverb
[ Word Family: noun : ↑ purpose , ↑ purposefulness ≠ ↑ purposelessness ; adverb : ↑ purposefully ≠ ↑ purposelessly , ↑ purposely ; adjective : ↑ purposeful ≠ ↑ purposeless ]
deliberately SYN on purpose :
A clause in the contract had been left purposely vague.