accountant(n = noun.person) comptroller, controller - someone who maintains and audits business accounts;
is a kind of bourgeois, businessperson
has particulars: auditor, bean counter, bookkeeper, certified public accountant, cpa, chartered accountant, cost accountant
Derived forms verb account₂, noun accountancy₁, noun accountantship₁

1.  One who renders account; one accountable. [1913 Webster]

2.  A reckoner. [1913 Webster]

3.  One who is skilled in, keeps, or adjusts, accounts; an officer in a public office, who has charge of the accounts. [1913 Webster]

   Accountable. Shak. [1913 Webster]

accountant, n. a professional keeper or inspector of accounts.

Etymology:
legal F f. pres. part. of OF aconter ACCOUNT

N  numeration, numbering, pagination, tale, recension, enumeration, summation, reckoning, computation, supputation, calculation, calculus, algorithm, algorism, rhabdology, dactylonomy, measurement, statistics, arithmetic, analysis, algebra, geometry, analytical geometry, fluxions, differential calculus, integral calculus, infinitesimal calculus, calculus of differences, dead reckoning, muster, poll, census, capitation, roll call, recapitulation, account, notation, addition, subtraction, multiplication, division, rule of three, practice, equations, extraction of roots, reduction, involution, evolution, estimation, approximation, interpolation, differentiation, integration, abacus, logometer, slide rule, slipstick, tallies, Napier's bones, calculating machine, difference engine, suan- pan, adding machine, cash register, electronic calculator, calculator, computer, arithmetician, calculator, abacist, algebraist, mathematician, statistician, geometer, programmer, accountant, auditor, numeral, numerical, arithmetical, analytic, algebraic, statistical, numerable, computable, calculable, commensurable, commensurate, incommensurable, incommensurate, innumerable, unfathomable, infinite, quantitatively, arithmetically, measurably, in numbers.

N  treasurer, bursar, bursary, purser, purse bearer, cash keeper, banker, depositary, questor, receiver, steward, trustee, accountant, Accountant General, almoner, liquidator, paymaster, cashier, teller, cambist, money changer, financier, Secretary of the Treasury, Chancellor of the Exchequer, minister of finance.

N  accounts, accompts, commercial arithmetic, monetary arithmetic, statistics, money matters, finance, budget, bill, score, reckoning, account, books, account book, ledger, day book, cash book, pass book, journal, debtor and creditor account, cash account, running account, account current, balance, balance sheet, compte rendu, account settled, acquit, assets, expenditure, liabilities, outstanding accounts, profit and loss account, profit and loss statement, receipts, bookkeeping, accounting, double entry bookkeeping, reckoning, audit, accountant, auditor, actuary, bookkeeper, bean counter, financier, accounting party, chartered accountant, certified accountant, accounting firm, auditing firm, monetary, accountable, accounting.

certified public accountant, chartered accountant, cost accountant