facile

adjective

1. 1

   Easy, now especially in a disparaging sense; contemptibly easy.

2. 2

   Amiable, flexible, easy to get along with.

   “His facile disposition made him many friends.”

3. 3

   Effortless, fluent (of work, abilities etc.).

4. 4

   Lazy, simplistic (especially of explanations, discussions etc.).

5. 5

   Of a reaction or other process, taking place readily.

   “Decarboxylation of beta-keto acids is facile...”