Answer: securer

AnswerCrossword Clue
SECURERComparatively safe
SECURERSeat belt, e.g.
SECURERMore safe
SECURERBetter protected
SECURERFastener.
SECURERNot as loose
securerfirmly in place
securercertain
securerto make secure
securersafe
securerto get hold of
securerone that secures (to make safe or certain)