严重性

seriousness

grave / serious / severe / critical

surname Yan

tight (closely sealed) / stern / strict / rigorous / severe / father

to repeat / repetition / again / re- / classifier: layer

heavy / serious / to attach importance to

nature / character / property / quality / attribute / sexuality / sex / gender / suffix forming adjective from verb / suffix forming noun from adjective, corresponding to -ness or -ity / essence / CL:個|个[ge4]