IPA: /ˌbɪbliəˈmeɪnɪkəl/
KK: /ˌbɪbliəˈmeɪnɪəkl/
Relating to an extreme enthusiasm or obsession for collecting books.
His bibliomaniacal tendencies led him to fill his entire house with rare and valuable books.
Bibliomaniacal → It is formed from "biblion" (from Greek, meaning book) and "mania" (from Greek, meaning madness or obsession) and the suffix "-cal" (indicating relating to). The word describes a state of madness or obsession related to books.
Think of 'biblion' meaning book and 'mania' meaning obsession — that's why bibliomaniacal refers to an obsession with books.
No commonly confused words.