halfway

adjectives

equally distant from the extremes
at a point midway between two extremes
"at the halfway mark"
is similar to
lying between two extremes in time or space or state
"going from sitting to standing without intermediate pushes with the hands"; "intermediate stages in a process"; "intermediate stops on the route"; "an intermediate range plane"
including only half or a portion
"halfway measures"
is similar to
constituting or comprising a part or fraction of a possible whole or entirety
"a fractional share of the vote"; "a partial dose"

adverbs

at half the distance; at the middle
"he was halfway down the ladder when he fell"