Answer: ascenders

AnswerCrossword Clue
ASCENDERSClimbers, most of the time
ASCENDERSOnes on the way up
ASCENDERSMore than half of adulthood?
ascendersA letter having such a part
ascendersA person or thing that ascends, in particular
ascendersASCENDER, one that ascends (to rise (to move upward))
ascendersA part of a letter that extends above the main part (as in b and h)
ascendersA device used in climbing that can be clipped to a rope to act as a foothold or handhold, or to keep something in position