importunous
/ˌɪmpəˈtjuːnəs/ /ˌɪmpɔːˈtjuːnəs/ /ˌɪmpəˈtʃuːnəs/rare (archaic in later use)
adjective
Troublesome, burdensome; importunate.
Origin
Late 16th century; earliest use found in Bartholomew Yong (bap. 1560, d. 1612), translator. From classical Latin importūnus importune + -ous.