The Collaborative International Dictionary of English v.0.48:

Goddess \God"dess\, n.
   1. A female god; a divinity, or deity, of the female sex.
      [1913 Webster]

            When the daughter of Jupiter presented herself among
            a crowd of goddesses, she was distinguished by her
            graceful stature and superior beauty. --Addison.
      [1913 Webster]

   2. A woman of superior charms or excellence.
      [1913 Webster]

WordNet (r) 3.0 (2006):

goddess
    n 1: a female deity

Moby Thesaurus II by Grady Ward, 1.0:

302 Moby Thesaurus words for "goddess":
   Aides, Aidoneus, Amen-Ra, Amor, Aphrodite, Apollo,
   Apollo Musagetes, Ares, Artemis, Ashtoreth, Astarte, Astraea,
   Athena, Atropos, Baal, Bellona, Bragi, Cailleac, Calliope,
   Castilian Spring, Cerberus, Ceres, Charon, Clio, Clotho, Cora,
   Cupid, Cynthia, Dame Fortune, Davy, Davy Jones, Decuma, Demeter,
   Despoina, Diana, Dike, Dionysos, Dionysus, Dis, Dis pater,
   Discordia, Donar, Dylan, Earth, Enyo, Erato, Erebus, Eris, Eros,
   Euterpe, Fata, Fates, Faunus, Flora, Fortuna, Frey, Freya, Frigg,
   Gaea, Gaia, Ge, Hades, Heaven, Hecate, Hekate, Hel, Helicon,
   Helios, Hera, Hermes, Hestia, Hippocrene, Hymen, Hyperion, Indra,
   Isis, Juno, Jupiter Fidius, Jupiter Fulgur, Jupiter Pluvius,
   Jupiter Tonans, Justice, Justitia, Kama, Kore, Lachesis, Loki,
   Love, Luna, Mars, Melpomene, Mercury, Minerva, Minos, Moirai,
   Morta, Muse, Nemesis, Neptune, Nereid, Nereus, Nona, Norns,
   Oceanid, Oceanus, Odin, Orcus, Osiris, Pan, Parcae, Parnassus,
   Persephassa, Persephone, Phoebe, Phoebus, Phoebus Apollo,
   Pierian Spring, Pierides, Pluto, Polyhymnia, Pomona, Poseidon,
   Priapus, Pronuba, Proserpina, Proserpine, Providence, Ra,
   Rhadamanthus, Satan, Savitar, Selene, Set, Shamash, Skuld, Sol,
   Surya, Teleia, Tellus, Terpsichore, Terra, Thalia, Themis, Thetis,
   Thor, Titan, Tiu, Triptolemos, Triptolemus, Triton, Tyche, Typhon,
   Tyr, Urdur, Varuna, Vayu, Venus, Verthandi, Vesta, Vidar, Vitharr,
   Weird Sisters, Weirds, Woden, Wotan, Zephyr, Zephyrus, Zeus,
   afflatus, artistic imagination, ball lightning, biosphere,
   blindfolded Justice, bolt, bolt of lightning, chain lightning,
   clash, clashing, commercialism, conception, conflict, contention,
   corn god, corn spirit, creative imagination, creative power,
   creative thought, dark lightning, deep, demigod, demigoddess,
   disaccord, disaffinity, discord, discordance, discordancy,
   disharmony, dread rattling thunder, enmity,
   esemplastic imagination, esemplastic power, faun, fertility god,
   field spirit, fire of genius, fireball, firebolt, flying flame,
   forest god, forked lightning, fresh-water nymph, friction,
   fulguration, fulmination, genius, geography, geosphere, globe, god,
   hero, heroine, idol, incompatibility, incompatibleness,
   industrialism, inharmoniousness, inharmony, inspiration, jangle,
   jar, kelpie, lares and penates, levin bolt, lightning, limniad,
   man fish, mercantilism, mermaid, merman, mischief, mother earth,
   muse, mythicization, mythification, mythopoeia, naiad, nix, nixie,
   noncooperation, oak-cleaving thunderbolts, ocean nymph,
   open conflict, panisc, panisca, paniscus, peal of thunder, phoenix,
   poesy, poetic genius, poetic imagination, rub, satyr, sea devil,
   sea god, sea nymph, sea-maid, sea-maiden, seaman,
   shaping imagination, sheet lightning, silenus, siren,
   strained relations, stroke of lightning, sylvan deity, tension,
   terra, terrestrial globe, the Muses, the blue planet, the goat god,
   this pendent world, thunder, thunderball, thunderbolt, thunderclap,
   thundercrack, thundering, thunderpeal, thunderstorm, thunderstroke,
   undine, unharmoniousness, unpleasantness, vale, vale of tears,
   vegetation spirit, water god, water spirit, water sprite,
   whole wide world, world