jejuneje‧june /dʒɪˈdʒuːn/ adjective formal 
1ideas that are jejune are too simple: 
jejune political opinions2boring
1ideas that are jejune are too simple: jejune political opinions2boring- operational research
- Operation Desert Storm
- Operation Iraqi Freedom
- Operation Overlord
- operative
- operator
- operetta
- Ophelia
- ophthalmic
- ophthalmologist
- ophthalmology
- opiate
- opine
- opinion
- opinionated
- opinion-makers
- opinion poll
- opium
- opossum
- opp.
- Oppenheimer, J. Robert
- opponent
- opportune
- opportunely
- opportunism