Effusion
/ɪˈfjuːʒn/
Definition 1 of 2
Pro Tip 1/3Literary Effect
Effusion in writing reflects a deep, uncontrolled outpouring of emotions, often seen in literature. 
The poet's effusion captured the depth of her heartache.
Pro Tip 2/3Expressive Power
Used to describe speech or writing that's full of emotion and strong feeling, beyond just facts. 
His letter was an effusion of his longing and loneliness.
Pro Tip 3/3Potential Overwhelm
Effusions can be overwhelming and might cause the listener or reader to feel bombarded. 
Her effusion of excuses left everyone feeling exasperated.