cerulean

Estimated CEFR level: C2 — Proficiency

Estimated from word frequency; not an official CEFR classification.

Definition

noun a light shade of blue
adjective of a deep somewhat purplish blue color similar to that of a clear October sky

From Latin caeruleus (“blue”) + -an, from caelum (“sky, heaven”) + -uleus (diminutive suffix).

Benign Ceruleans of the second sex! — Don Juan, George Gordon Byron, Baron Byron
Flag cerulean--sunny flag, with the orbs of night dappled! — Leaves of Grass, Walt Whitman
"What is it?" demanded the man, halting and holding suspended in his hand a cerulean blue egg case. — Walter and the Wireless, Sara Ware Bassett

azure, sapphire, lazuline, sky-blue

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