Steadfastness or firmness in mind (as under hardship, duress, or suffering) Fortitude or endurance, Fidelity, Loyalty, devotion, Stability and Uniformity
The unchanging state of a system In the context of physiology, it is understood that constancy means "relatively constant", or changing very little over time
Fixedness or firmness of mind; persevering resolution; especially, firmness of mind under sufferings, steadiness in attachments, or perseverance in enterprise; stability; fidelity
the quality of being free from change or variation faithfulness in personal attachment (especially sexual fidelity) the tendency for perceived objects to give rise to very similar perceptual experiences in spite of wide variations in the conditions of observation
The state or quality of being constant or steadfast; freedom from change; stability; fixedness; immutability; as, the constancy of God in his nature and attributes
approval Constancy is the quality of being faithful and loyal to a particular person or belief. those who have proved their constancy in love. = fidelity
of Purpose Long-term planning that is based on meeting and exceeding customer expectations The allocation of resources, research and education designed to meet future needs
the tendency to perceive the shape of a rigid object as constant despite differences in the viewing angle (and consequent differences in the shape of the pattern projected on the retina of the eye)
the tendency to perceive the veridical size of a familiar object despite differences in their distance (and consequent differences in the size of the pattern projected on the retina of the eye)