Sad Definition

săd

sadder, saddest

adjective

sadder, saddest

Having, expressing, or showing low spirits or sorrow; unhappy; mournful; sorrowful.

Webster's New World

Causing or characterized by dejection, melancholy, or sorrow.

Webster's New World

Dark or dull in color; drab.

Webster's New World

Very bad; deplorable.

Webster's New World

Dark-hued; somber.

American Heritage

Synonyms:

Antonyms:

abbreviation

Seasonal affective disorder.

Webster's New World

(medicine) Seasonal affective disorder.

Wiktionary

Wiktionary

(US) Special Activities Division.

Wiktionary

Other Word Forms of Sad

Base Form:

sad

Comparative:

sadder

Superlative:

saddest

From Middle English sad, from Old English sæd (“sated with, weary of, satiated, filled, full"), from Proto-Germanic *sadaz (“sated, satisfied"), from Proto-Indo-European *sehâ‚‚- (“to satiate, satisfy"). Cognate with West Frisian sêd, Dutch zat (“sated, drunk"), German satt (“well-fed, full"), Danish sat, Norwegian sad, Gothic 𐍃𐌰𐌸𐍃 (saþs, “full, satisfied"), and through Indo-European, with Latin satur (“well-fed, sated"). Related to sate.

From Wiktionary
Middle English weary, sorrowful from Old English sæd sated, weary sā- in Indo-European roots

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