Farewell Definition

fâr-wĕl

interjection

Used in parting with another or others, usually to express good wishes.

Webster's New World

He said "Farewell!" and left.

Wiktionary

noun

Words spoken at parting, usually of good wishes.

Webster's New World

An acknowledgment at parting; a goodbye.

American Heritage

The act of departing or taking leave.

American Heritage

A leaving or going away.

Webster's New World

An act of departure; leave-taking; a last look at, or reference to something.

Wiktionary

Synonyms:

Antonyms:

adjective

Parting; last; final.

A farewell gesture.

Webster's New World

Synonyms:

verb

To bid farewell or say goodbye.

Wiktionary

Other Word Forms of Farewell

Singular:

farewell

Plural:

farewells

From Middle English farewel, from fare wel!, an imperative expression, equivalent to fare (“to fare, travel, journey”) +‎ well. Cognate with Scots farewele, fairweill (“farewell”), West Frisian farwol (“farewell”), Dutch vaarwel (“farewell”), Danish farvel (“farewell”), Norwegian farvel (“farewell”), Swedish farväl (“farewell”), Faroese farvæl (“farewell”), Icelandic far vel (“farewell”).

From Wiktionary
Middle English fare wel imperative of faren to fare fare wel well well²

From American Heritage Dictionary of the English Language, 5th Edition