bilateral

Involving both parties

Bilateral means having or involving two sides.

In anatomy, it describes structures that exist in pairs on opposite sides of the body, like bilateral hearing loss affecting both ears.

In diplomacy and law, bilateral refers to agreements or relationships between exactly two parties: a bilateral trade agreement between the US and Canada.

The term contrasts with unilateral (one-sided) and multilateral (involving multiple parties).

diplomatic

treaty

Binding pact between nations

  • accordHarmony between parties
  • pactFormal agreement between parties
  • agreementShared position between parties

negotiation · summit · convention · protocol · alliance · entente · talks · relations · dialogue · cooperation

mutual

reciprocal

Shared between two parties

interdependent · cooperative · collaborative · exchange · give-and-take · complementary · correlative · symbiotic · corresponding · interrelated

anatomical

symmetry

Invariance under transformation

limbs · paired · hemispheres · lungs · kidneys · eyes · ears · appendages · extremities · organs

spatial

symmetric

Equal on both sides

aligned · opposite · corresponding · matching · equal · proportional · complementary · reflected · congruent · dual

kinship

descent

Downward slope or lineage

ancestry · inheritance · consanguinity · genealogy · cognatic · kindred

Categories
Opposites
number of parties involved

bilateralunilateral

Affecting one side only

one-sided · multilateral · single-party · individual · trilateral

symmetry and reciprocity

bilateralunilateral

Affecting one side only

asymmetrical · nonreciprocal · asymmetric · one-sided · lopsided

scope of participation

bilateralmultilateral

Involving multiple parties

collective · multinational · universal · global

Phrases
Family

bilaterally, bilateralism, bilaterals

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