IPA: /ˌʌn.rɪˈsɛp.tɪv/
KK: /ʌnˈrɛsɪptɪv/
Not willing to accept or consider new ideas or suggestions.
She was unreceptive to the feedback from her colleagues.
Unreceptive → It is formed from "un-" (meaning not) and "receptive" (from Latin "receptivus", meaning able to receive). The word "unreceptive" means not able or willing to receive or accept something.
Think of 'not' ('un-') being added to 'able to receive' ('receptive') — that's why unreceptive means not willing to accept.