一か八か[ichikabachika] sink or swim
嘘っ八[usoppachi] downright lie
嘘っ八百[usoppappyaku] full of lies
嘘八百[usohappyaku] full of lies
八釜しい[kamabisushii] noisy

口八丁[kuchihacchou] voluble
三十八度線[sanjuuhachidosen] the Thirty-eighth Parallel
四苦八苦[shikuhakku] being in dire distress
四通八達[shitsuuhattatsu] traffic network extending in all directions
四方八方[shihouhappou] in all directions

空挺[kuutei] airborne
空挺降下地域[kuuteikoukachiiki] drop zone
空挺隊[kuuteitai] paratroops
空挺隊員[kuuteitaiin] paratroopers
空挺部隊[kuuteibutai] airborne troops

八挺[hacchou] skillfulness
挺する[teisuru] to volunteer (bravely)
挺す[teisu] to volunteer (bravely)
挺進[teishin] go ahead of