阻止 （ソシ） obstruction, prevention, hindrance, check, blocking, stopping

阻害 （ソガイ） obstruction, impediment, hindrance, inhibition, blocking, check

悪阻 （オソ） morning sickness, nausea and vomiting of pregnancy

妊娠悪阻 （ニンシンオソ） hyperemesis gravidarum, HG, severe morning sickness

阻む （はばむ） to keep someone from doing, to stop, to prevent, to check, to hinder, to obstruct, to oppose, to thwart