depth

[1]	deepness , extent , measure , profundity , profoundness
[2]	profundity , profoundness , abstruseness , obscurity , reconditeness , complexity , intricacy
[3]	profundity , wisdom , sagacity , sageness , understanding , perception , astuteness , perspicacity , perspicaciousness , insight , intuition , acumen , penetration
[4]	intensity , profundity , strength , vividness , brilliance , brilliancy , brightness , richness
[5]	depths , deep(s) , abyss , abysm , chasm , bowels of the earth , (bottomless) pit , nethermost reaches/regions , nadir
[6]	in depth , thoroughly , comprehensively , in detail , profoundly , deeply , extensively , intensively , concentratedly , probingly