adjective/bi.sɛk.sɥɛl/
bisexual
“Francaise, 33, tres jolie, elegante, cherche une femme sympa, bisexuelle, pour plaisir erotique sans et avec son mari.” — Frenchwoman, 33, very pretty, elegant, seeks attractive bisexual woman for erotic pleasure with and without your husband
From bi- + sexuel. Attested since 1778 as a synonym in botany for "hermaphroditic" ("having male and female parts").