cryp·to·nym 
(krĭptə-nĭm′)
(krĭptə-nĭm′)n.
A word or name that is used secretly to refer to another; a code name or code word.
- spectacled
- spectacled bear
- spectacular
- spectacularity
- spectacularly
- spectate
- spectator
- spectatorial
- spectatorship
- specter
- spectinomycin
- spectra
- spectral
- spectrality
- spectral line
- spectrally
- spectralness
- spectre
- spectrin
- spectro-
- spectrogram
- spectrograph
- spectrographic
- spectrographically
- spectrography