Oh, dude, when you take "barn" and change one letter, you get "barn" without the "b." So, the word you're looking for is "barn" without the "b," which is "yarn." Like, it's a pretty simple wordplay, but hey, that's the answer!
bare
tamper
Tamper
It would be either a prefix or a suffix. Prefix means the letters before, and suffix means the letters after the word.
The word would be sane.
bare
Hovering your foot over the brake without actually pressing on the brake
It means sining without background music (acapella). This is done to evaluate the voice of the singer without backround music covering any possible mistakes.
replace
The word 'evolve' means change.
Winter
Alter or amend
modulate
gaze
change, adjust, reform, recast, revise
Alternate is a synonym for change or vary. It begins with the letter a.
By means of free elections.