I must admit I have partaken in many of the adventures that go along with the privilege of driving a hippie camper van.
The few times I have partaken in smoking pot it has been a mild experience.
1560s, back-formation from Middle English part-taking (late 14c.), or part-taker (c.1400), both translations of Latin particeps "participant" (n.), also "sharing, partaking" (see participation). Related: Partook; partaking.