Definitions
1.adjectiveEasy, now especially in a disparaging sense; contemptibly easy.
2.adjectiveAmiable, flexible, easy to get along with."His facile disposition made him many friends."
3.adjectiveEffortless, fluent (of work, abilities etc.).
4.adjectiveLazy, simplistic (especially of explanations, discussions etc.).
5.adjectiveOf a reaction or other process, taking place readily."Decarboxylation of beta-keto acids is facile..."