The state or quality of being in agreement, harmony, or mathematical congruence.
From congruent + -cy (variant suffix meaning 'state or quality'). Both '-ence' and '-cy' suffixes create nouns from adjectives, with '-cy' being slightly more formal.
In therapy, psychologists talk about 'congruency' between what you say and feel—Carl Rogers's 'congruence' concept revolutionized psychology by saying authenticity matters for mental health.
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