ask - v. to question; to say something is wanted ("We ask the teacher questions every day.")

assist - v. to help

astronaut - n. a person who travels in space

astronomy¹ - n. the scientific study of stars and the universe

asylum² - n. political protection given by a government to a person from another country

at - prep. in or near ("at the edge"); where ("look at"); when ("at noon")

atmosphere - n. the gases surrounding any star or planet

attach - v. to tie together; to connect

attack - n. a violent attempt to damage, injure or kill; v. to start a fight

attempt - v. to work toward something; to try; to make an effort

attend - v. to be present at

automobile³ - n. a vehicle with wheels used to carry people; a car

autumn - n. the time of the year between summer and winter

average - n. something (a number) representing the middle; ad. common; normal

avoid - v. to stay away from

awake - ad. not sleeping

award - n. an honor or prize for an act or service

away - ad. not near