Colligate descends from Latin colligare, itself from "com-" ("with") plus "ligare" ("to tie"). Which of the following words is NOT tied to "ligare"? "Ligature," "ligament," "lien," "rely," "ally," "oblige," "furl," and "league" (in the sense of "an association of persons, groups, or teams") can all be traced back along varying paths to "ligare." That leaves only "collocate," which means "to set side by side" and comes from "com-" plus locare, meaning "to place."
Word History
Etymology
Latin colligatus, past participle of colligare, from com- + ligare to tie — more at ligature