-runbehindone'sexpenses;bebehindhandinone'scircumstances;cannotmake(both)endsmeet;Incomecan'tcoveroutlay[outcome].;incomefallingshortofexpenditure;leapthepale;livebeyondone'ssalary[means];One'sincomeisnotadequatetoone'sneeds.;spendmorethanoneearns;Theincomefallsshortoftheexpenditure.