From The Collaborative International Dictionary of English v.0.48 :
Loftiness \Loft"i*ness\, n.
The state or quality of being lofty.
[1913 Webster]
From WordNet (r) 3.0 (2006) :
loftiness
n 1: the quality of being high or lofty [syn: highness,
loftiness] [ant: lowness]
2: impressiveness in scale or proportion [syn: stateliness,
majesty, loftiness]