Idiom: First Of AllCheck definitions of...first of all MeaningsHow to pronounce "first of all":AU Your browser does not support the audio element. Firstly; before anything else.A-Z Proximitiesfirst and lastfirst annualfirst come, first servedfirst loserfirst love first of all first-mover disadvantagefirst offfirst of neverfirst port of callfirst upSimilar Idiomsfirst come, first servedfirst of allall things to all peoplebe-all and end-allat firstat first blushcast the first stonecome firstfeet firstfirst among equalsfirst and lastfirst annualfirst loserfirst lovefirst-mover disadvantagefirst offfirst of neverfirst port of callfirst-ratefirst upSimilar Phrasesfirst in first outfirst-come-first-serveat firstat first blushat first glanceat first handfirst aidfirst battle of bull runfirst causeat first sightdouble firsteuclid's first axiomfirst amendmentfirst amendment to the united states constitutionfirst degreefirst duke of marlboroughfirst halffirst appearancefirst balconyfirst baron beveridge