somniferous
adj.
"sleep-producing," c.1600, from Latin somnifer, from somni- "sleep" + ferre "to bear" (see infer). With -ous.
〔李〕[somn;-i-;fer;-ousa.] a.催眠的； 麻醉的 ←somn (L somnus)=sleep 睡眠
〔李〕a.催眠的；麻醉的 [-ferous=carrying] ←somn（i）-[L] =sleep睡
〔李〕a. 催眠的 [somni- =sleep] ←-ferous[L] =bearing or producing表示“产生… …的”
〔李〕[somni (somnus)=sleep睡眠；-ferous a.=bearing or bringing to产生……的，导致……的→] a.bringingtosleep催眠的