ad-lib assemble bat out botch build bungle cast compose compound concoct construct cook up create dash off devise do anyhow do by halves do carelessly do offhand elaborate erect evolve extemporize extrude fabricate fake fake up fashion form formulate frame fudge together fudge up get up improvisate improvise indite jury-rig knock off knock out knock together lash up make make up manufacture mature mold patch patch together patch up piece together play by ear pound out prefabricate prepare produce put together put up raise rear rough out roughcast roughhew run up scrap the plan set up shape slap up strike off throw off throw together toss off toss out toss together trifle with vamp whip up wing it write