bedridden (adj.)youdaoicibaDictYouDict
also bed-ridden, mid-14c., from adjectival use of late Old English bæddrædæn "bedridden (man)," from bedrid, from Old English bedreda, literally "bedrider, bedridden (man)," from bed + rida "rider" (see ride (v.)). Originally a noun, it became an adjective in Middle English and acquired an -en on the analogy of past participle adjectives from strong verbs such as ride.
walking (adj.)youdaoicibaDictYouDict
c. 1400, present participle adjective from walk (v.). Walking sickness, one in which the sufferer is able to get about and is not bed-ridden, is from 1846. Walking wounded is recorded from 1917. Walking bass is attested from 1939 in jazz slang. Walking stick is recorded from 1570s; the insect so called from 1760.