importunate
Concise Oxford English Dictionary © 2008 Oxford University Press:
importunate /ɪmˈpɔːtjʊnət/
▶adjective persistent or pressing.
– derivatives
importunately adverb,
importunity noun (pl. importunities).
importunately adverb,
importunity noun (pl. importunities).
– origin C16: from L. importunus ‘inconvenient’, based on Portunus, the god who protected harbours; see word history at opportune.
'importunate' also found in these Oxford entries:

