تلفظ بین المللی : /ɪmpɹˈɒpəli/ تلفظ : [Impr'0p3li]
English
In an improper manner; not properly; unsuitably;
unbecomingly.
Having two surfaces; -- said specif. of aëroplane wings or aërocurves which are covered on both sides with fabric, etc., thus completely inclosing their frames.
