We don't have synonyms for choose up yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are close up, choke up and chase up.
(v) :
(idiomatic, intransitive) To select; pick, especially, to make a final decision on a selection or option.
(v) :
(idiomatic, intransitive) To form (sides or teams), usually for a game, by having two individual players choose their teammates.
(v) :
(idiomatic, intransitive, African-American Vernacular, slang) To choose (not necessarily fully consensually) to work as a prostitute for a particular pimp.
(v) :
(idiomatic, intransitive) To select; pick, especially, to make a final decision on a selection or option.
(v) :
(idiomatic, intransitive) To form (sides or teams), usually for a game, by having two individual players choose their teammates.
(v) :
(idiomatic, intransitive, African-American Vernacular, slang) To choose (not necessarily fully consensually) to work as a prostitute for a particular pimp.