standing up

present participle and gerund of stand up

(intransitive) To rise from a lying or sitting position.
(transitive) To bring something up and set it into a standing position; to set something up.
(idiomatic, transitive) (stand someone up) To avoid a prearranged meeting, especially a date, with (a person) without prior notification; to jilt or shirk.
(intransitive) To last or endure over a period of time.
(intransitive) To continue to be believable, consistent, or plausible.
(intransitive) To stand immediately behind the wicket so as to catch balls from a slow or spin bowler, and to attempt to stump the batsman.
(transitive) To launch, propel upwards
(US, transitive) To formally activate and commission (a unit, formation, etc.).
To make one's voice heard, to speak up.
(formal, intransitive) To serve in a role during a wedding ceremony.