Synonyms for Inpatient:

n.

anorexic, depressive, asthmatic, the critical list, case, agoraphobe, diabetic, amnesiac, bed-blocker, consumptive. inpatient (noun)
inmate.
person (noun)
inmate.

Other synonyms:

Other relevant words:
bed-blocker, amnesiac, diabetic, consumptive, case, anorexic, agoraphobe, asthmatic, depressive.