Idiom: First UpCheck definitions of...firstupMeaningsHow to pronounce "first up":AU Your browser does not support the audio element. Firstly; before anything else.A-Z Proximitiesfirst lovefirst of allfirst offfirst of neverfirst port of call first up first-mover disadvantagefirst-ratefish in troubled watersfish or cut baitfish outSimilar Idiomsfirst come, first servedat firstat first blushcast the first stonecome firstfeet firstfirst among equalsfirst and lastfirst annualfirst loserfirst lovefirst-mover disadvantagefirst of allfirst offfirst of neverfirst port of callfirst-ratefirst upget to first basein the first placeSimilar Phrasesfirst in first outfirst-come-first-serveat firstat first blushat first glanceat first handfirst aidfirst baron macaulayfirst battle of bull runat first sightdouble firsteuclid's first axiomfirst amendmentfirst appearancefirst causefirst degreefirst duke of marlboroughfirst balconyfirst baron beveridgefirst baron kelvin