Related Clues:
- Most cold and frosty
- Most bashful or self-conscious
- Most cold and frozen
- It's very cold to have to sit around the CIE
- I see the ties get knotted when it's very frosty
- Mostly frees this to make it very hard
- Most demure
- Slowest to mix, perhaps
- Retiring to the max
- Most unfeeling, as a stare
- Most aloof
- Most gelid
- Reserved to the maximum extent
- Most wintry
- Most frozen