Synonyms of 'constancy'
It was a time of political stability and progress.
Caramel was used to maintain uniformity of colour in the brandy.
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 faithfulness, loyalty, devotionEven 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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Devotion is commitment to a particular activity.
devotion to the cause
Fidelity is loyalty to a person, organization, or set of beliefs.
I had to promise fidelity to the Queen.
Thesaurus for constancy from the Collins English Thesaurus
Constancy is the quality of staying the same even though other things change.