perhaps Antonyms

absolutely hardly believable very unlikely really unlikely highly improbable highly unlikely unimaginably unattainably not likely hardly likely more unlikely as sure as a gun not for love or money not for all the tea in china scarcely likely pretty unlikely not very likely not the most likely much more unlikely come what may without a doubt not necessarily impracticably certainly anti admittedly actually accurately soon sure as sure as eggs is eggs as sure as eggs are eggs when Hell freezes over alright all right yes unlikely undeniably as sure as eggs