| become unsteady; begin to fail or give way; to shake or tremble, as the hands or voice |
| inconvenient, as not affording sufficient space or room; uncomfortable: |
opaque o·paque (ō-pāk')
adj.
Impenetrable by light; neither transparent nor translucent.
| opaque (ō-pāk') Pronunciation Key
Resistant to the transmission of certain kinds of radiation, usually light. Metals and many minerals are opaque to light, while being transparent to radio waves and neutrinos. Compare translucent, transparent. |