solidify Antonyms

light a fire run powder oppose obstruct melt liquidize liquefy fuse fluidize smelt smelting make thin be against melt down unthaw dethaw unfreeze thaw thawing soften fight dissolve dissent contradict contest confront comminute combust combat colliquate challenge assail controvert counter dispute disconnect disapprove disappear disagree deny deliquesce defy counteract achieve