The 'source' of a river.
It is the source, or the headwaters.
Spring
it means good
mouth
Source.
"Ik" is an Afrikaans word that begins with the letter "i." It means "I" in English.
A word meaning to leave out which begins with an "o" is omit.
Reversal is a synonym for the word switch. It begins with the letter r.
Alternative
ample
angling
A word that means friends that begins with P is pals.