about (Adjective) — On the move. ex. "up and about"
about (Adverb) — (of quantities) imprecise but fairly close to correct. ex. "in just about a minute" ex. "he's about 30 years old" ex. "I've had about all I can stand" ex. "we meet about once a month"
about (Adverb) — All around or on all sides. ex. "dirty clothes lying about" ex. "let's look about for help"
about (Adverb) — In the area or vicinity. ex. "a few spectators standing about"
about (Adverb) — Used of movement to or among many different places or in no particular direction. ex. "wandering about with no place to go" ex. "people were rushing about" ex. "news gets about"
about (Adverb) — In or to a reversed position or direction. ex. "about face"
about (Adverb) — In rotation or succession. ex. "turn about is fair play"
about (Adverb) — (of actions or states) slightly short of or not quite accomplished; all but. ex. "the job is (just) about done"
about (Preposition) — On the topic of. ex. "a book about physics"
about (Preposition) — With regard or relation to; on the subject of. ex. "I have a query about your previous reply" ex. "think about it"