预防性

prophylactic / preventative / protective

to advance / in advance / beforehand / to prepare

to prevent / to take precautions against / to protect / to guard against / precautionary / prophylactic

to protect / to defend / to guard against / to prevent

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]