IPA: /dɪsˈhɑːrtənɪŋli/
KK: /dɪsˈhɑːrtənɪŋli/
In a way that causes someone to lose hope or confidence.
The team's performance dishearteningly declined as the season progressed.
dishearteningly → It is formed from "dis-" (meaning apart or away) and "heart" (from Old English "heorte", meaning the organ that pumps blood, often associated with emotions) and "-ening" (a suffix indicating a process or action) and "-ly" (a suffix that turns an adjective into an adverb). The word describes the process of causing someone to feel a loss of spirit or enthusiasm, thus making them feel apart from their heart's desires.
Think of 'dis-' meaning 'apart' and 'heart' representing emotions — when something is disheartening, it takes you away from your emotional strength, making you feel down.