"Glad eyen" is a phrase that describes eyes full of happiness and joy. It is often used to describe a person who is delighted or pleased with what they see. Synonyms for this phrase could include "gleaming eyes", "bright eyes", "happy eyes", "joyful eyes", "sparkling eyes" or "shining eyes". Each of these synonyms convey a sense of delight and contentment, with the eyes acting as a window to the soul. The choice of synonym used for "glad eyen" may depend on the particular context or tone of the sentence, but all ultimately describe the expression of a happy and pleased person.