The word is "melancholy."
A vague feeling of sadness. Seemingly without cause.
Depression is the feeling of how a person feels with and extreme length of sadness.
depressed?
Alas- used to express unhappiness, pity, or concern.
Remorse is a feeling of regret or sadness for doing wrong or sinning.
euphoria, for joy
Downhearted ?
The definition of the term lonely is basically a feeling of solace and sadness through a person being devoid of having friends company and love. Being without companionship causes loneliness.
"Chagrin d'enfant" is a French term that translates to "childhood sorrow" or "childhood regret." It refers to the feeling of disappointment or regret that a person experiences looking back on their childhood experiences or actions.
An idiom is a phrase that makes no sense unless you know the definition. "Feeling" is a word.
No it is a feeling or emotion, not matter.
Unhappily or with sadness.