'urine-suppressing' originates from Modern English, specifically formed from the noun 'urine' (from Latin 'urina') and the present participle 'suppressing' from the verb 'suppress' (from Latin 'supprimere'), where 'urina' meant 'urine' and 'supprimere' combined 'sub-'/'sup-' meaning 'under' and 'premere' meaning 'to press'.

'urine' entered English via Old French from Latin 'urina', and 'suppress' came into English via Old French from Latin 'supprimere'; the hyphenated compound adjective 'urine-suppressing' is a modern English formation combining these elements.

Individually, 'urine' originally referred simply to the bodily fluid and 'suppress' meant to press down or check; together in modern usage they form 'urine-suppressing', meaning 'tending to reduce or stop urine production or flow'.