impassable, unpassable

impassable, unpassable, impassible, serviceable, decent, unmemorable, mediocre, slushy, forgettable, unexciting, slicken, tolerable, traversable, unpaved, unexceptional, recommendable, unplowed, motorable, ropey, flavorless, bland, inaccessible, inoffensive, flawless, stilted, listenable, enjoyable, playable, unentertaining, zippy, satisfactory, slippery, drivable, navigable, unnavigable, untraveled, proficient, rutty, surefooted, unspectacular, atrocious, presentable, moreish, snowbound, treacherous, asphalted, believable, slippy, unobjectionable, unenjoyable, okay, cheesy, unnoticeable, intelligible, uninspiring, unchallenging, slick, unremarkable, dull, unrecognizable, uninteresting, indistinctive, letterboxed, respectable, unvaried, pleasant, unploughed, legible, corny, fluent, overfamiliar, vehicular traffic, amateurish, sleety, unreadable, inelegant, crappy, unsexy, runny, smooth, rudimentary, unreachable, crisp, metalled, graveled, palatable, unpolished, sucky, unusable, sketchy, untrodden, execrable, turgid, soupy, roadworthy, boring, crustier, rutted, gloppy, undemanding, waterlogged, iffy, anything, avail, bear, dozen, express, feasible, read, abide, admits, anybody, anyone, ap, appears, avails, barren, be, believe, bona, brief, briefly, belter, better, faultless, indifferent, superb, excellent, finished, hetter, lousy, neater, rougher, ungrammatical, creditable

adequate, climbable, fair to middling, negotiable, ordinary, so-so, surmountable, travelable