(economics) market power

(law) attorney-in-fact, proxy, authorised representative, authorised signatory

abuse of power

to take power, to seize power

to be exhausted / to be overwhelmed / to be unable to take any more; to have had it with; to be fed up with; to be sick and tired of

(economics) purchasing power parity

to be obligated to, to have no choice but to / can't help, can't help but

(transitive, informal, figuratively) to be sick of (something/someone), not to be able to stand the sight of (something/someone) anymore

plural of pouvoir

(law, politics) full powers; power of attorney