伏せる【ふせる】
to turn over (face down), to lay face down, to lay upside down, to point downwards (eyes, head, etc.), to cast down (eyes), to lie (one's body) face down, to lie flat (on the ground), to conceal, to hide, to keep secret, to place in hiding (e.g. troops for an ambush), to lie down, to retire, to go to bed (with an illness)
降伏【こうふく】
surrender, capitulation, submission, yield
待ち伏せ【まちぶせ】
ambush, lying in wait for an ambush
潜伏【せんぷく】
concealment, hiding, ambush, incubation, latency, dormancy
起伏【きふく】
undulation, ups and downs, highs and lows
伏線【ふくせん】
foreshadowing, preparation, precautionary measures
伏兵【ふくへい】
ambush, troops in ambush, unexpected opposition, unexpected obstacle
山伏【やまぶし】
yamabushi, practitioner of Shugendō, itinerant Buddhist monk
伏流【ふくりゅう】
subterranean stream
腕立て伏せ【うでたてふせ】
push-up (exercise), press-up
伏し目【ふしめ】
downcast look