Sweet is the opposite of sour.
Sweet.
A 5-letter opposite for the word noisy is quiet,
small 5 letter word
A five letter word for the opposite of lower is upper.
The opposite word is "first."
enter
wider
scent
The 5 letter word is white.
The 5 letter word that means the opposite of big and has a short vowel sound is "small."
Stand.
alike
often