Source : Webster's Revised Unabridged Dictionary (1913)

Damn \Damn\ (d[a^]m), v. t. [imp. & p. p. {Damned} (d[a^]md or
   d[a^]m"n[e^]d); p. pr. & vb. n. {Damning} (d[a^]m"[i^]ng or
   d[a^]m"n[i^]ng).] [OE. damnen dampnen (with excrescent p),
   OF. damner, dampner, F. damner, fr. L. damnare, damnatum, to
   condemn, fr. damnum damage, a fine, penalty. Cf. {Condemn},
   {Damage}.]
   1. To condemn; to declare guilty; to doom; to adjudge to
      punishment; to sentence; to censure.

            He shall not live; look, with a spot I damn him.
                                                  --Shak.

   2. (Theol.) To doom to punishment in the future world; to
      consign to perdition; to curse.

   3. To condemn as bad or displeasing, by open expression, as
      by denuciation, hissing, hooting, etc.

            You are not so arrant a critic as to damn them [the
            works of modern poets] . . . without hearing.
                                                  --Pope.

            Damn with faint praise, assent with civil leer, And
            without sneering teach the rest to sneer. --Pope.

   Note: Damn is sometimes used interjectionally, imperatively,
         and intensively.

Damned \Damned\, a.
   1. Sentenced to punishment in a future state; condemned;
      consigned to perdition.

   2. Hateful; detestable; abominable.

            But, O, what damned minutes tells he o'er Who doats,
            yet doubts, suspects, yet strongly loves. --Shak.

Source : WordNet®

damned
     adj 1: expletives used informally as intensifiers; "he's a blasted
            idiot"; "it's a blamed shame"; "a blame cold winter";
            "not a blessed dime"; "I'll be damned (or blessed or
            darned or goddamned) if I'll do any such thing"; "he's
            a damn (or goddam or goddamned) fool"; "a deuced
            idiot"; "tired or his everlasting whimpering"; "an
            infernal nuisance" [syn: {blasted}, {blame}, {blamed},
             {blessed}, {damn}, {darned}, {deuced}, {everlasting},
             {goddam}, {goddamn}, {goddamned}, {infernal}]
     2: in danger of the eternal punishment of hell; "poor damned
        souls" [syn: {cursed}, {doomed}, {unredeemed}, {unsaved}]
     n : people who are condemned to eternal punishment; "he felt he
         had visited the realm of the damned"
     adv : in a damnable manner; "kindly Arthur--so damnably , politely
           , endlessly persistent!" [syn: {damnably}, {cursedly}]