Synonyms of 'astir'
out of bed
up and about
up and around
2 in motionDictionary, active, on the move (informal)
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If you say that a person or animal is active in a particular place or at a particular time, you mean that they are performing their usual activities or performing a particular activity.
Guerrilla groups are active in the province.
If you say that a plan or scheme is afoot, it is already happening or being planned, but you do not know much about it.
We all knew that something awful was afoot.
Thesaurus for astir from the Collins English Thesaurus
awake and out of bed