amperemeter amperemetre amperometer apatoraptor apertometer approperate attemperate emperoptera femtoampere footforfoot marofototra pamparaptor papparapaam paratrooper pepper-tree permeameter perpetrator peta-ampere poopetrator potamometer potato-root potoooooooo prep-to-pro pretaporter proof-proof rat-tat-tat ratatatfrat reformatter reperforate roto-rooter tamperproof tartarpaper tat-tat-tat tera-ampere terraformer tete-a-tete tetra-paper tomatometer toofarapart toro-ferrer tortereform tramteatret tree-topper troptometer