Sad means to feel a way about something that is unhappy.
My friend was sad after her cat had passed away
Rejected means to be dismiss as inadequate, inappropriate, or not to one's taste.
"she didn't want him to feel he had been rejected
"an application to hold a pop concert at the club was rejected"
after his sister was born"
""union negotiators rejected a 1.5 percent pay increase"
refuse to agree to (a request).