IPA: /ɪmˈpɔːrtjʊnər/
KK: /ɪmˈpɔrtʃənər/
A person who persistently asks for something, often in a way that is annoying or bothersome.
The importuner kept asking for donations even after being told no.
Importuner is derived from the Old French 'importuner', which means to trouble or annoy, and is based on the Latin 'importunus', meaning unfit or inconvenient. The Latin root is formed from 'in-' (meaning not) and 'portunus' (meaning suitable or fit). Thus, the word 'importuner' refers to someone who is troublesome or annoying, often by persistently asking for something.
Think of someone who is 'not suitable' ('in-' means not and 'portunus' means fit) for a situation because they are being bothersome or annoying.