[up.side down] adv [alter. of ME up so doun, fr. up + so + doun down] (15c) 1: in such a way that the upper and the lower parts are reversed in position
2: in or into great disorder -- upside-down adj
[up.side down] adv [alter. of ME up so doun, fr. up + so + doun down] (15c) 1: in such a way that the upper and the lower parts are reversed in position
2: in or into great disorder -- upside-down adj
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012