fickle
adjective
likely to change, especially due to caprice, irresolution, or instability; casually changeable.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"Fickle as the winds" is our death-seal upon a man; but should we like our winds unfickle?
From The Wit and Humor of America, Volume IV. (of X.) by Marshall Pinckney Wilder