MDMA 
(ĕm′dē-ĕm-ā)
(ĕm′dē-ĕm-ā)n.
A drug, C11H15NO2, that is chemically related to amphetamine and mescaline and was formerly used in psychotherapy but is now illegal. It is used illicitly for its ability to induce euphoria, relaxation, and heightened empathy.
[m(ethylene)d(ioxy)m(eth)a(mphetamine).]
- off of
- off-off-Broadway
- off of gourd
- off of head
- off of one's gourd
- off of one's head
- off of plumb
- off (one's) guard
- off one's guard
- off (one's) hands
- off one's hands
- off (one's) rocker
- off one's rocker
- off/out of (one's) gourd
- off/out of (one's) head
- off/out of plumb
- off-peak
- off-piste
- off-price
- offprint
- off-putting
- off-road
- offroad
- off rocker
- offscouring