The Collaborative International Dictionary of English v.0.48:

Amity \Am"i*ty\, n.; pl. Amities. [F. amiti['e], OF.
   amisti['e], amist['e], fr. an assumed LL. amisitas, fr. L.
   amicus friendly, from amare to love. See Amiable.]
   Friendship, in a general sense, between individuals,
   societies, or nations; friendly relations; good
   understanding; as, a treaty of amity and commerce; the amity
   of the Whigs and Tories.
   [1913 Webster]

         To live on terms of amity with vice.     --Cowper.
   [1913 Webster]

   Syn: Harmony; friendliness; friendship; affection; good will;
        peace.
        [1913 Webster]

WordNet (r) 3.0 (2006):

amity
    n 1: a cordial disposition [syn: amity, cordiality]
    2: a state of friendship and cordiality

Moby Thesaurus II by Grady Ward, 1.0:

64 Moby Thesaurus words for "amity":
   accord, accordance, affinity, agape, agreement, amiability,
   amiableness, amicability, amicableness, benevolence,
   bonds of harmony, brotherly love, caritas, cement of friendship,
   charity, comity, communion, community, community of interests,
   compatibility, concord, concordance, congeniality, correspondence,
   empathy, esprit, esprit de corps, feeling of identity,
   fellow feeling, fellowship, frictionlessness, friendliness,
   friendship, good vibes, good vibrations, happy family, harmony,
   identity, kindliness, kindness, kinship, like-mindedness, love,
   mutuality, neighborlikeness, neighborliness, oneness, peace,
   peaceableness, rapport, rapprochement, reciprocity, sharing,
   sociability, solidarity, sympathy, symphony, team spirit,
   understanding, unhostility, union, unison, unity,
   well-affectedness



U.S. Gazetteer Places (2000):

Amity, AR -- U.S. city in Arkansas
   Population (2000):    762
   Housing Units (2000): 361
   Land area (2000):     3.286289 sq. miles (8.511449 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    3.286289 sq. miles (8.511449 sq. km)
   FIPS code:            01360
   Located within:       Arkansas (AR), FIPS 05
   Location:             34.266246 N, 93.464093 W
   ZIP Codes (1990):     71921
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Amity, AR
    Amity


U.S. Gazetteer Places (2000):

Amity, OR -- U.S. city in Oregon
   Population (2000):    1478
   Housing Units (2000): 495
   Land area (2000):     0.600572 sq. miles (1.555475 sq. km)
   Water area (2000):    0.007890 sq. miles (0.020436 sq. km)
   Total area (2000):    0.608462 sq. miles (1.575911 sq. km)
   FIPS code:            02000
   Located within:       Oregon (OR), FIPS 41
   Location:             45.116253 N, 123.205619 W
   ZIP Codes (1990):     97101
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Amity, OR
    Amity


U.S. Gazetteer Places (2000):

Amity, MO -- U.S. town in Missouri
   Population (2000):    70
   Housing Units (2000): 36
   Land area (2000):     0.215462 sq. miles (0.558044 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.215462 sq. miles (0.558044 sq. km)
   FIPS code:            01054
   Located within:       Missouri (MO), FIPS 29
   Location:             39.868574 N, 94.434733 W
   ZIP Codes (1990):     64422
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Amity, MO
    Amity