[1760–70; burglar + -ious]This word is first recorded in the period 1760–70. Other words that entered Englishat around the same time include: icing, ingrain, lockup, plunk, provincialism-ious is a suffix forming adjectives that have the general sense “possessing, full of”a given quality (glorious); it has often been used to Anglicize Latin adjectives with terminations that cannotbe directly adapted into English (atrocious; obvious)