A four letter word that is opposite of received and starts with the letter g is gave.
Perhaps the word you are looking for is "normal".
mistakable
proud
I think the word you seek is "allow".
Profit
pessimistic
The five letter word that is the opposite of behind and begins with an 'a' and ends with a 'd' is AHEAD.
Hurt
Likely candidate is the word: Cloudy. Obviously cloudy.
Maybe outgoing, which means friendly or sociable.
contrary contradict
dismount is the opposite of mount and contains eight letters