-idan (#), -astan (#), kardan (#)
A verb-forming suffix occurring originally in loanwords from Gk. that have entered English through L. or Fr.
From M.E. -isen, from O.Fr. -iser, from L.L. -izare, from Gk -izein.
-idan, -astan infinitive suffixes; kardan "to do, to make," auxiliary verb of compound verbs (Mid.Pers. kardan; O.Pers./Av. kar- "to do, make, build;" Av. kərənaoiti "he makes;" cf. Skt. kr- "to do, to make," krnoti "he makes, he does," karoti "he makes, he does," karma "act, deed;" PIE base kwer- "to do, to make").