いや (translations)→ boy but even except gad hate indeed more neh no nope not oh sick though weary well why yes
うーむ (translations)→ ah hmmm whew
うーん (translations)→ God jeepers now
うん (translations)→ maybe please
ふーん (translations)→ wow
ふむ (translations)→ expect
へん (translations)→ much pfft
umbilical umbrageous umpteenth ump