Synonyms of penal in English:

penal


See definition of penal

adjective

1‘a penal institution’

SYNONYMS
disciplinary, punitive, corrective, correctional, retributive

2‘he avoided borrowing at penal rates of interest’

SYNONYMS
exorbitant, extortionate, excessive, outrageous, preposterous, immoderate, unreasonable, inordinate, iniquitous, inflated, sky-high, expensive, gross