inclusive (adv.) Look up inclusive at
"including the stated limits in the number or sum," mid-15c., from Medieval Latin inclusivus, from Latin inclus-, past participle stem of includere "to shut in, enclose" (see include).
inclusive (adj.) Look up inclusive at
"characterized by including a great deal, leaving little out," c. 1600, from Medieval Latin inclusivus (see inclusive (adv.)). The Middle English adjective was incluse "confined, shut in" (late 14c.). Related: Inclusively; inclusiveness.