the quality of being enduring and free from change or variation

likely to change frequently often without apparent or cogent reason; variable

faithfulness and dependability in personal attachments (especially sexual fidelity)

not changeable or subject to change

steadfast in affection or allegiance

resistant to change of position or condition

not liable to or capable of change

the quality of being enduring and free from change or variation

constant and unchanging

firm and dependable especially in loyalty

unceasing