inconstancy.

Changeability in feeling, allegiance, or behavior.

Use it for

Words that belong together

• inconstancy of affection
• habitual inconstancy

On the page

Her complaint concerned his inconstancy, not one broken appointment.

Usage notes

Primary category: literary / elevated general. Forms: Usually uncountable; no ordinary plural in this sense. Legacy lexical fields mirror sense 1 only. Use numbered sense fields for all meanings. Established modern English lexical item. No separate regional spelling or grammatical inflection entry. Writing functions: character, atmosphere, interpretation. Commonness: moderately common.