jump·y 
(jŭmpē)
(jŭmpē)adj. jump·i·er, jump·i·est
1. Characterized by fitful, jerky movements.
2. On edge; nervous.
jumpi·ness n.
- suppurative
- supra-
- supracellular
- supragenic
- supraglottal
- supraliminal
- supralittoral
- supramaxilla
- supramaxillary
- supramolecular
- supranational
- supraorbital
- suprarenal
- suprarenal gland
- suprascapular
- supraventricular
- supravital
- supremacist
- supremacy
- suprematism
- suprematist
- supreme
- Supreme Being
- Supreme Court
- supremely