性 xìng

性别 xìng bié — gender 性格 xìng gé — nature 个性 gè xìng — individuality 性质 xìng zhì — nature 记性 jì xing — memory 慢性 màn xìng — slow and patient 人性 rén xìng — human nature 任性 rèn xìng — willful 索性 suǒ xìng — you might as well (do it) 弹性 tán xìng — flexibility 性感 xìng gǎn — sex appeal 性命 xìng mìng — life