Meaning of おくめん in Japanese

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Definition of おくめん

おくめん(okumen) 【臆面】

おくめんもない(okumenmonai) 【臆面もない】

おくめんもなく(okumenmonaku) 【臆面もなく】

(adv) boldly; audaciously; impudently; unashamedly; unabashedly
「まあその、自慢できる事でもないんだけど」というか、臆面もなく吹聴できる話でもない。
"Well, that is, it's not something I can boast of," in fact it's not something I can talk unashamedly about in public.