philter UK /ˈfɪltə/US /ˈfɪltɚ/verb 2noun 1forms 3 verb2 •To impregnate or mix with a love potion. •To charm to love; to excite to love or sexual desire by a potion.Government of the Tongue Let not those that have repudiated the more inviting sins, shew themselves philtred and bewitched. noun1 •A kind of potion, charm, or drug; especially a love potion intended to make the drinker fall in love with the giver. formsphiltered · philtering · philters