Choose the most appropriate ANTONYM of the given word.

FICKLE

Steadfast 

The most appropriate antonym of the word fickle is steadfast.

• Fickle means "likely to change one's mind or allegiance easily."
• Steadfast means "firmly fixed in purpose or belief; loyal."

The other words do not have the same meaning as steadfast.

• Fictitious means "imaginary or invented."
• Repulse means "to drive or force back."
• Betrayal means "the act of betraying someone or something."