suf. the quality or state of sth

suf. 名词后缀，表示“特性；状态”，有些词用-ty，如：

-ity: ability（能力）；activity（活动）；equality（平等）；

-ty: anxiety（焦虑）；beauty（美丽）；difficulty（困难）。

其他例词

-ity: authority; disability; electricity; gravity; identity; majority; nationality; minority; possibility; quality; quantity; reality; responsibility; security

-ty: liberty; safety; variety