Some nature words that begin with the letter U include ultraviolet (referring to a type of light beyond the visible spectrum), umbra (the darkest part of a shadow), and underbrush (the vegetation growing beneath the main canopy in a forest). These terms are commonly used in various scientific fields related to nature and the environment.
Unemployment and urbanization are social study words. They begin with the letter u.
Ultimatum, uncle, undertaker and unicorn begin with the letter u. Union, utopia, usual and usage begin with the letter u.
unique
no!
up, us
Unscrew and undertow begin with the letter u. They end with letter w.
Uncertainty, undertow and ulcer are scary. They begin with the letter u.
Ugly
uranus
Urginea is a flower. It begins with the letter u.
Some Christmas words that begin with "u" are unwrap and under (as in under the tree). The words yule and yuletide have a "u" sound, but they actually begin with "y."
nilgau, nilghau, nylghau