What does inconstancy mean?
Inconstancy names the quality of changing repeatedly or failing to remain steady. It is used most often of a person whose feelings, loyalties, intentions, or behaviour are changeable, often with the implication that this changeableness is disappointing, unreliable, or morally troublesome. The word can also describe the variability of circumstances, such as markets, weather, or plans, although this broader sense is less sharply evaluative. Its tone is formal and literary, making it especially suitable for discussion of character, relationships, and the human condition rather than casual descriptions of ordinary shifts. Inconstancy is related etymologically to constancy but is not simply a neutral synonym for inconsistency: it emphasizes the process or quality of change itself. A writer may prefer it to changeableness when the repetition of changes is significant, and to fickleness when human instability is the focus. Because the word can sound critical, context matters: praising intellectual or emotional inconstancy can suggest adaptability, whereas using it of promises or conduct usually signals disapproval.
nounInconstancy is the quality of not remaining constant, especially the fickleness or changeableness of a person's feelings, intentions, or behaviour.
- The quality of being changeable or unreliable, especially fickleness of feeling, intention, or behaviour.
"She weary of the inconstancy of promises made and broken with such ease."
"His inconstancy made it difficult for anyone to rely on his promises."
"The inconstancy of the market rewarded investors who could adjust quickly."
The plural is possible but uncommon; the word is normally used as an uncountable noun.
"The inconstancies in her plans made the journey difficult to organize."
Inconstancy is the negative mirror of constancy: where constancy promises steadiness, inconstancy names everything that keeps changing.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does inconstancy come from?
The word entered English in the early 17th century from French inconstance, which was based on Latin inconstantia, meaning “inconstancy.” Latin inconstantia derived from inconstans, meaning “inconstant” or “changeable,” and was formed from the negative prefix in- and constans, the source of constancy. Its principal Latin cognate constantia therefore gave English both constancy and its negative counterpart, inconstancy.
Related word forms
How inconstancy is actually used
Formal and literary, though fully understood in standard English. It often implies fickleness or unreliability, but it can also neutrally describe repeated change in a person, condition, or system.
Easily confused with inconstancy
Inconstancy emphasizes habitual changeability or fickleness, whereas inconsistency can also mean the incompatibility of parts of a statement, system, or body of evidence.