Антонимом quite slippery

dry rough certain coarse definite safe secure stable unslippery strong sound steady solid reliable dependable healthy impervious protected settled fine okay well trustworthy harmless cautious careful hateful untreacherous prudent riskless risk-free low-risk firm sturdy stout guarded robust perdurable hardened sure resilient resistant staunch durable indestructible stalwart hardy tough imperishable undoubted resolute inexpugnable happy substantial well-made well-built long-lasting strongly made well-constructed heavy-duty built to last made to last

reliable trustworthy open forthright frank harmless honest sticky aboveboard reputable ingenuous sincere straight artless straightforward truthful direct good ethical principled candid guileless upright undesigning moral true scrupulous honourable genuine honorable dependable innocent fair faithful naive responsible lawful decent just real respectable unassuming above-board public upstanding overt valid law-abiding virtuous incorruptible righteous veracious conscionable proper right worthy kosher actual safe morally correct high-minded right-minded dinkum square undisguised outspoken blunt above board downright foolish thoughtless uncalculating enduring long permanent lasting clear legal naïve well-intended legitimate kind respected unreserved heartfelt earnest unfeigned undoubted sure unquestionable incontestable indubitable indisputable certain undeniable hands-down questionless unproblematic secure blatant simple easy trustable fitting authentic unaffected saintly guiltless natural plain light definite exemplary pure equitable factual moralistic clean upfront unartificial uncorrupted impeccable blameless unpretentious unpretending unartful above reproach self-righteous fair-minded noble of good repute unimpeachable praiseworthy meritorious immaculate up front irreproachable uncorrupt sinless unbribable squeaky clean morally right morally acceptable right-thinking high-principled stand-up

honest naive innocent open ingenuous artless ethical frank guileless simple undesigning candid foolish forthright idiotic imbecile straight straightforward stupid unclever unintelligent as green as grass wet behind the ears gullible trusting aboveboard credulous ignorant unsophisticated dull trustful simple-minded simpleminded impressionable unsmart green unartful sincere childlike believing accepting kind deceivable susceptible dupable shy unsceptical unsuspicious unskeptical unsuspecting exploitable coarse rough naïve unwise undiscerning nescient obtuse inept naif imprudent senseless uninformed jejune callow unknowing unacquainted naïf slow-witted

dry rough coarse dull shoddy stupid unintelligent unpolished

rough murky dull rugged shining smiling uneven

dull dim flat lusterless mat matte rough dark matt tarnished

frank forthright honest open blunt candid outspoken direct straightforward truthful plainspoken real unequivocating unequivocal uninhibited unrestricted aboveboard unambiguous sincere unguarded upfront forthcoming guileless unfiltered unsparing apparent explicit clear openhearted scrupulous artless outright ingenuous straight unreserved matter-of-fact no-nonsense out-front straight-shooting straight-talking up front up-front lay it on the line saying what one thinks to the point genuine arrogant

dependable loyal reliable trustworthy faithful responsible steady stanch steadfast trusty good unfailing conscientious staunch sure unswerving sensible true sincere trustable honorable solid reputable stable sturdy competent honest honourable unwavering always there copper-bottomed good as one's word to be counted on truthful upright credible principled incorruptible authentic ethical constant unimpeachable thorough veracious virtuous faultless righteous level-headed straight-up up front worthy of trust full of integrity

unendearing uningratiating deterring disgusting proud repellent

inarticulate sincere halting hesitant implausible thoughtful tongue-tied quiet silent stuttering uncommunicative

bright brightened brilliant illuminated illumined light lighted lightsome lit lucent lucid luminous innocent

unimpressionable

sure balanced stable steady even steadfast unwavering firm fixed stabilised stabilized determinate abiding invariable uniform constant unchanging established unfaltering enduring unvarying controlled unfluctuating permanent settled level rigid

quite soon quite the opposite of quite well quits quittance quittances quite possibly quite likely quite good quite a number quite a lot of quite a few