시상이 · 시상을
poetic idea, poetic inspiration
Example
시인은 산책을 하다가 시상이 떠올랐다고 해요.
The poet says the idea for the poem came to him on a walk.
Word parts
시 poem+상 think
Literally 'poem thought'; a homonym 시상 means 'awarding prizes'.
Good to know
In exams, 시상 전개 means how the poem's ideas unfold; 시상이 떠오르다 = inspiration strikes.