Sper·ry 
(spĕrē), Elmer Ambrose 1860-1930.
(spĕrē), Elmer Ambrose 1860-1930. American engineer and inventor of numerous electrical devices, including the gyrocompass, a nonmagnetic navigational aid (1910).
- inadvertently
- inadvisability
- inadvisable
- in aeternum
- in a fashion
- inalienability
- inalienable
- inalienably
- in all
- in (all good) conscience
- in all probability
- inalterability
- inalterable
- inalterably
- in a manner of speaking
- in a measure
- inamorata
- inamorato
- inamrinone
- in-and-in
- in-and-out
- inane
- inanely
- inanimate
- inanimately