All 3 Uses of

inexplicable
in
Middlemarch

With some endowment of stupidity and conceit, she might have thought that a Christian young lady of fortune should find her ideal of life in village charities, patronage of the humbler clergy, the perusal of "Female Scripture Characters," unfolding the private experience of Sara under the Old Dispensation, and Dorcas under the New, and the care of her soul over her embroidery in her own boudoir—with a background of prospective marriage to a man who, if less strict than herself, as being involved in affairs religiously inexplicable, might be prayed for and seasonably exhorted.†
Chpt 1

inexplicable = incapable of being explained or accounted for

To poor Dorothea these severe classical nudities and smirking Renaissance-Correggiosities were painfully inexplicable, staring into the midst of her Puritanic conceptions: she had never been taught how she could bring them into any sort of relevance with her life.†
Chpt 1 *

Will burst in here and there with ardent words of praise, marking out particular merits in his friend's work; and Dorothea felt that she was getting quite new notions as to the significance of Madonnas seated under inexplicable canopied thrones with the simple country as a background, and of saints with architectural models in their hands, or knives accidentally wedged in their skulls.†
Chpt 2