Adjective: Imperturbable (im-per-TER-buh-bul)
Definition: Marked by extreme calm, impassivity, and steadiness: serene.
Sample sentence: The imperturbable pilot did not panic when her plane flew into an electrical storm.
Adjective: Imperturbable (im-per-TER-buh-bul)
Definition: Marked by extreme calm, impassivity, and steadiness: serene.