The principle was, to summon up enough energy to keep the walls away.
Turning aside into the woods, he set about making an encampment with as much vigor as he could summon up.
Many people feel that they cannot summon up the courage to talk to someone about debt or money issues.
I considered a financial career but at an interview with a major bank was unable to summon up the necessary enthusiasm !
The word usage examples above have been gathered from various sources to reflect current and historial usage. They do not represent the opinions of YourDictionary.com.