Querulous

She spoke in a querulous voice.

The President was patient, persuasive, reasonable: the General was querulous, petty and sometimes actually insulting.

The storekeeper, Tom Jackson, is a querulous man.

“Nay, you said as much before,” said the querulous old man, “and yet I was put forth from Kinross, and pillaged by troopers on the road.—[…]”

"But how am I to obtain such treaty?" asked Monsieur, in a querulous tone.

The nights were now cold, gemmed with a multitude of bright stars, uncanny with the querulous wail of coyotes and the occasional deep voices of wolves.

In contrast, the Westminster Gazette in 1912 was much more positive about railway staff, praising the "...army of porters hustling and bustling hither and thither with barrows groaning under the weight of bags and baggage and... the ever-patient and long-suffering guards, courteously giving information and advice to the querulous passengers... to the porter the Christmas season means a continuous round of heavy labour, extremely tiring to both nerves and temper, and this fact the public too often seem either to forget or ignore."