Learn That Word

Synonyms for U (same or very similar meaning)

WordNet sense 1 (a base containing nitrogen that is found in RNA (but not in DNA) and derived from pyrimidine; pairs with adenine):
uracil

WordNet sense 2 (a heavy toxic silvery-white radioactive metallic element; occurs in many isotopes; used for nuclear fuels and nuclear weapons):
uranium

WordNet sense 3 (the 21st letter of the Roman alphabet):
letter u

WordNet sense 4 (occupying the highest socioeconomic position in a society):
upper-class


From the ODE community, based on WordNetadd/edit