Gelid
/ˈdʒelɪd/
Definition 1 of 1
Pro Tip 1/3Literary Flair
Best used in creative writing to evoke imagery of intense coldness. 
Her fingers traced the gelid designs of frost on the windowpane.
Pro Tip 2/3Emotional Coldness
Used metaphorically to describe a person's cold demeanor or unemotional state. 
His smile did not reach his eyes, leaving a gelid impression on everyone.
Pro Tip 3/3Archaic Hint
Gelid is an older word, so it can imply a historical or classical tone. 
The gelid halls of the castle retained the chill of ages past.