passable

adjectives

able to be passed or traversed or crossed
"the road is passable"
antonym
is similar to
able to be sailed on or through safely
"navigable waters"; "a navigable channel"
is similar to
capable of being passed or negotiated
"a negotiable road"
is similar to
capable of being surmounted
is similar to
capable of being traversed
"highway crews soon had the roads travelable"
about average; acceptable
"more than adequate as a secretary"