summon up ↔ something phrasal verb ( see also ↑ summon )
1 . if something summons up a memory, thought, or image, it makes you remember it or think of it SYN conjure up :
The smell summoned up memories of family holidays by the sea.
2 . to try very hard to have enough courage, energy, or strength, because you need it:
Ruth took a deep breath, summoned up her courage, and told him the truth.