The Collaborative International Dictionary of English v.0.48:

Heavenly \Heav"en*ly\ (h[e^]v"'n*l[y^]), a. [AS. heofonic.]
   1. Pertaining to, resembling, or inhabiting heaven;
      celestial; not earthly; as, heavenly regions; heavenly
      music.
      [1913 Webster]

            As is the heavenly, such are they also that are
            heavenly.                             --1 Cor. xv.
                                                  48.
      [1913 Webster]

   2. Appropriate to heaven in character or happiness; perfect;
      pure; supremely blessed; as, a heavenly race; the
      heavenly, throng.
      [1913 Webster]

            The love of heaven makes one heavenly. --Sir P.
                                                  Sidney.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Heavenly \Heav"en*ly\, adv.
   1. In a manner resembling that of heaven. "She was heavenly
      true." --Shak.
      [1913 Webster]

   2. By the influence or agency of heaven.
      [1913 Webster]

            Out heavenly guided soul shall climb. --Milton.
      [1913 Webster]

WordNet (r) 3.0 (2006):

heavenly
    adj 1: relating to or inhabiting a divine heaven; "celestial
           beings"; "heavenly hosts" [syn: celestial, heavenly]
    2: of or relating to the sky; "celestial map"; "a heavenly body"
       [syn: celestial, heavenly]
    3: of or belonging to heaven or god [ant: earthly]

Moby Thesaurus II by Grady Ward, 1.0:

193 Moby Thesaurus words for "heavenly":
   Arcadian, Christlike, Christly, Cynthian, Edenic, Elysian,
   God-fearing, Olympian, adorable, ambrosial, anagalactic, angelic,
   archangelic, asteroidal, astral, astrologic, astrologistic,
   astrologous, astronomic, astrophysical, awesome, awful, beaming,
   beatific, beatified, blessed, blissful, blooming, bright,
   brilliant, canonized, celestial, cherubic, circumplanetary,
   cislunar, darling, dazzling, delectable, delicious, delightful,
   devastating, divine, empyreal, empyrean, entrancing, equinoctial,
   ethereal, excellent, exquisite, extragalactic, extramundane,
   extraterrestrial, fantastic, from on high, galactic, gilt-edged,
   glamorous, glorified, glorious, glowing, godlike, godly,
   godly-minded, golden, good, gorgeous, great, heliacal, holy,
   holy-minded, ideal, idealized, immense, immortal, in glory,
   incarnate, incarnated, ineffable, inenarrable, inexpressible,
   intercessional, intercessive, intercosmic, interplanetary,
   intersidereal, interstellar, inviolable, inviolate, killing, lunar,
   lunary, lunate, lunular, lunulate, luscious, lush, made flesh,
   magnificent, martyred, marvelous, mediative, mediatory, meteoric,
   meteoritic, millennial, nebular, nebulose, nebulous, numinous,
   otherworldly, paradisaic, paradisal, paradisiac, paradisial,
   paradisian, paradisic, perfect, planetal, planetarian, planetary,
   planetesimal, propitiative, propitiatory, pure, pure in heart,
   purehearted, radiant, rapturous, raving, ravishing, redeemed,
   redemptive, religious, resplendent, righteous, sacred, sacrosanct,
   sainted, saintlike, saintly, salvational, saved, scrumptious,
   self-existent, semilunar, sensational, seraphic, shining, sidereal,
   smashing, solar, sparkling, sphery, spiritual, spiritual-minded,
   splendid, splendiferous, splendorous, splendrous, star-spangled,
   star-studded, starry, stellar, stellary, sterling, stunning,
   sublime, super, superb, supereminent, superexcellent, superfine,
   superhuman, supernal, supernatural, terrestrial, terrific,
   transcendent, transcendental, transmundane, tremendous,
   ultramundane, unearthly, unspeakable, untouchable, unutterable,
   unworldly, uranic, utopian, venerable, wonderful, yummy,
   zodiacal