philiac adjective 1noun 1forms 3 adjective1 •Involving or pertaining to friendship or platonic love.Erotic love is selfish love, philiac love is a mutual giving that ceases when mutuality ceases. — 1971 noun1 •A person who has a philia.Browne gives us a long list of eminent men who were ailurophobiacs and philiacs. — 1914 formsphiliacs · more philiac · most philiac