阻

obstruction

to keep someone from doing

obstruction

morning sickness

to hinder the growth of (e.g. plants, someone)

barrage balloon

nausea triggered by seeing one's partner experiencing morning sickness

obstruent

to obstruct one's way

depressed in spirits

demoralization

standing firmly against

steep (terrain)

battlefield air interdiction

inhibitor

protease inhibitor

justifiable cause for noncompliance with the law

loss of spirit

rejection

road block

macrophage migration inhibitory factor

selective serotonin reuptake inhibitor

separation

hyperemesis gravidarum

monoamine oxidase inhibitor

reductase inhibitor

carbonate dehydratase inhibitor