Spelling <s> for /z/

I/M/D/S/A/L

C/S/I/O/C/M

R/S/D/N/P/E/I/T/E

I/E/Y/M/S/R

N/U/I/I/E/I/Q/S/T/V

H/S/P/A/E

N/H/S/S/A/I/E/T/U/I/T/C

N/O/O/I/T/I/S/P/P/R/E

Feeling or showing a lot of interest and excitement about something.

Something related to space; extremely large.