IPA: /ʌnˈwɛlkəm/
KK: /ʌnˈwɛlkəm/
Not accepted or received with pleasure; not wanted or desired.
His comments were unwelcome at the meeting.
Unwelcome → It is formed from "un-" (meaning not) and "welcome" (from Old English *wilcuma*, meaning a person who is pleasing or agreeable). The word "unwelcome" means not pleasing or agreeable, indicating that someone or something is not received with pleasure.
Think of 'not' ('un-') being combined with someone who is 'pleasing' ('welcome') — that's why unwelcome means not pleasing.