τολμάω
tolmáō
tol-mah'-o
from a Greek word not found in the New Testament (boldness; probably itself from the base of τέλος through the idea of extreme conduct); to venture (objectively or in act; while θαῤῥέω is rather subjective or in feeling); by implication, to be courageous.

KJV translates as: be bold, boldly, dare, durst