downhill

Universal Words adverb, adjective, noun adverb towards the bottom of a hill; in a direction that goes down: to run / walk / cycle downhill OPPUPHILL IDIOMS go downhill to get worse in quality, health, etc. SYNDETERIORATE: Their marriage went downhill after the first child was born. * He's been going slowly downhill since he came out of hospital. adjective going or sloping towards the bottom of a hill: a downhill path OPPUPHILL IDIOMS be (all) downhill