fickle

As adjectives the difference between impulsive and fickle

is that impulsive is having the power of driving or impelling; giving an impulse; moving; impellent while fickle is quick to change one’s opinion or allegiance; insincere; not loyal or reliable.

As a noun impulsive

is that which impels or gives an impulse; an impelling agent.

As a verb fickle is

to deceive; flatter.

As adjectives the difference between fickle and versatile

is that fickle is quick to change one’s opinion or allegiance; insincere; not loyal or reliable while versatile is capable of doing many things competently.

As a verb fickle

is to deceive; flatter.

As adjectives the difference between fickle and flippant

is that fickle is quick to change one’s opinion or allegiance; insincere; not loyal or reliable while flippant is glib; speaking with ease and rapidity.

As a verb fickle

is to deceive; flatter.

Fickly is a derived term of fickle.

As an adjective fickle

is quick to change one’s opinion or allegiance; insincere; not loyal or reliable.

As a verb fickle

is to deceive; flatter.

As an adverb fickly is

in a fickle manner.

As adjectives the difference between fickle and humoursome

is that fickle is quick to change one’s opinion or allegiance; insincere; not loyal or reliable while humoursome is (archaic) liable to humours or moods; fickle; ill-tempered.

As a verb fickle

is to deceive; flatter.