This is the 10680th most frequent Spanish word.
declinar
To decline, refuse, or diminish.
Here, 'declinar' is used in the sense of formally rejecting or refusing something presented, such as an offer.
Decidí declinar la oferta de empleo que me hicieron.
I decided to decline the job offer they gave me.
In this case, 'declinar' refers to the action of something moving downward or setting, often used for celestial bodies like the sun.
El sol comienza a declinar hacia el horizonte al atardecer.
The sun starts to decline towards the horizon at sunset.
In this example, 'declinar' is describing a gradual deterioration or worsening, commonly used for health or conditions.