See succubus in American Heritage Dictionary 4
noun pl. suc·cu·bus·es or suc·cu·bi (-bīˌ, -bēˌ) also suc·cu·bae (-bēˌ, -bīˌ)
Origin:
Origin: Middle English
Origin: , from Medieval Latin
Origin: , alteration (influenced by Late Latin incubus, incubus)
Origin: of Latin succuba, paramour
Origin: , from succubāre, to lie under
Origin: : sub-, sub-
Origin: + cubāre, to lie down
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