Synonyms of 'constancy'
1 (noun) Climate reflects a basic struggle between constancy and change.
It was a time of political stability and progress.
Food dye is used to maintain the uniformity of colour in the cake.
Perseverance will pay off in the end.
There was no denying his considerable firmness of purpose.
The permanence of the peace treaty has been threatened by their actions.
2 (noun) Even before they were married, she had worried about his constancy.
But I am constant as the northern star
Of whose true-fixed and resting quality
There is no fellow in the firmament – Julius Caesar]
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in the sense of devotion
strong attachment to or affection for someone or something
devotion to the cause
in the sense of fidelity
loyalty to a person, belief, or cause
I had to promise fidelity to the Queen.
Thesaurus for constancy from the Collins English Thesaurus