year [a period of time equal to twelve months] We signed a work agreement for one year.
yellow [having the color like that of gold or the sun] The skin of bananas is yellow.
yes [used to express agreement or to permit] When he asked her to marry him, she said, "Yes." yesterday [the day before today] We talked yesterday about her problem.
yet [(1) at some time before now; (2) now; (3) at this time; (4) however] Have they arrived yet? (1) Do not sit down yet. (2) I cannot tell you about it yet. (3) The sun was shining, yet it was cold. (4) you [the person or persons being spoken to] I am glad to see you. young [(1) in the early years of life; (2) not old] The young girl missed her mother. (1) He seemed too young to know so much. (2) zero [the number meaning none or nothing] One minus one equals zero. zoo [a place where animals are kept for the public to look at and study] We saw the new panda at the zoo.