to thicken, as by evaporation; make or become dense.

any song of praise, joy, or triumph.

pensive, especially in a melancholy way.

to behave in a high-spirited, festive manner; make merry.

to impede or hinder; hamper.

of or relating to winter; wintry.

the great circle formed by the intersection of the plane of the earth's orbit with the celestial sphere; the apparent annual path of the sun in the heavens.

an acrobatic movement, either forward or backward, in which the body rolls end over end, making a complete revolution.

a feeling of dread, anxiety, or anguish.

the variation and differences in neurological structure and function that exist among human beings, especially when viewed as being normal and natural rather than pathological.