a. 最悲哀的(为sad的最高级)

Sad \Sad\ (s[a^]d), a. [Compar. {Sadder} (s[a^]d"d[~e]r);
superl. {Saddest}.] [OE. sad sated, tired, satisfied, firm,
steadfast, AS. s[ae]d satisfied, sated; akin to D. zat, OS.
sad, G. satt, OHG. sat, Icel. sa[eth]r, saddr, Goth.
sa[thorn]s, Lith. sotus, L. sat, satis, enough, satur sated,
Gr. 'a`menai to satiate, 'a`dnh enough. Cf. {Assets}, {Sate},
{Satiate}, {Satisfy}, {Satire}.]
1. Sated; satisfied; weary; tired. [Obs.]

Yet of that art they can not waxen sad,
For unto them it is a bitter sweet. --Chaucer.

2. Heavy; weighty; ponderous; close; hard. [Obs., except in a
few phrases; as, sad bread.]

His hand, more sad than lump of lead. --Spenser.

Chalky lands are naturally cold and sad. --Mortimer.

3. Dull; grave; dark; somber; -- said of colors.
``Sad-colored clothes.'' --Walton.

Woad, or wade, is used by the dyers to lay the
foundation of all sad colors. --Mortimer.

4. Serious; grave; sober; steadfast; not light or frivolous.
[Obs.] ``Ripe and sad courage.'' --Chaucer.

Lady Catharine, a sad and religious woman. --Bacon.

Which treaty was wisely handled by sad and discrete
counsel of both parties. --Ld. Berners.

5. Affected with grief or unhappiness; cast down with
affliction; downcast; gloomy; mournful.

First were we sad, fearing you would not come;
Now sadder, that you come so unprovided. --Shak.

The angelic guards ascended, mute and sad. --Milton.

6. Afflictive; calamitous; causing sorrow; as, a sad
accident; a sad misfortune.

7. Hence, bad; naughty; troublesome; wicked. [Colloq.] ``Sad
tipsy fellows, both of them.'' --I. Taylor.

Note: Sad is sometimes used in the formation of
self-explaining compounds; as, sad-colored, sad-eyed,
sad-hearted, sad-looking, and the like.

{Sad bread}, heavy bread. [Scot. & Local, U.S.] --Bartlett.

Syn: Sorrowful; mournful; gloomy; dejected; depressed;
cheerless; downcast; sedate; serious; grave; grievous;
afflictive; calamitous.