n.
Pronunciation: ˌ in-f ə - ' de-l ə -t ē , -( ˌ )f ī -
Function: noun
Inflected Form: plural -ties
Date: 15th century
1 : lack of belief in a religion
2 a : unfaithfulness to a moral obligation : DISLOYALTY b : marital unfaithfulness or an instance of it