1 Diacritic mark, in the shape of a hat ‹ˆ› and placed above Latin letters or in the shape of a snake ( tilde) and placed above a Greek letter ( accent2). In ancient Greek, the circumflex denotes a particular tone for the given vowel....

The circumflex (ˆ) (often mistakenly also called a "caret", from a non-diacritical sign with similar shape (^); also "hat" or "uppen") is a diacritic mark used in written Croatian, French, Frisian, Esperanto, Norwegian, Romanian, Slovak, Vietnamese,...