trou·ble·mak·er 
(trŭbəl-mā′kər)
(trŭbəl-mā′kər)n.
One that stirs up trouble or strife.
trouble·mak′ing n. & adj.
- ommatidial
- ommatidium
- ommatophore
- Ommiad
- Ommiad
- omni-
- omnibus
- omnidirectional
- omnidirectional radio range
- omnifarious
- omnifariously
- omnipotence
- omnipotency
- omnipotent
- omnipotently
- omnipresence
- omnipresent
- omnirange
- omniscience
- omnisciency
- omniscient
- omnisciently
- omnisexual
- omnisexuality
- omnium-gatherum