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

下り坂[kudarizaka] descent
下坂[shimosaka] downhill
急な坂[kyuunasaka] sudden drop
急坂[kyuuhan] steep slope
京坂[keihan] Kyoto-Osaka

坂道[sakamichi] hill road
上り坂[noborizaka] ascent
登坂[tohan] climbing a slope (hill)
女坂[onnazaka] the easier of two slopes