He could not even summon the energy to get up and turn on his bedroom light.
I can summon him here in an instant to give evidence if you wish.
They then spent over an hour revising Summoning Charms, which according to Professor Flitwick were bound to come up in their OWL, and he rounded off the lesson by setting them their largest ever amount of Charms homework.
But Kreacher did not answer the summons.
Snape had struck before Harry was ready, before he had even begun to summon any force of resistance.
Harry was too quick for Neville, whose wand went spinning out of his hand, hit the ceiling in a shower of sparks and landed with a clatter on top of a bookshelf, from which Harry retrieved it with a Summoning Charm.
’Nothing to summon!
There are no more uses of "summon" in the book.
Show samples from other sources
I was summoned to the principal’s office.
I summoned all my courage and walked into the room.