 Which word doesn't describe Tolliver?
"A little percentage here and there on the cargoes never shows by the time figures get back to Earth. "Okay I can't fire you legally—as long as you report for work," grumbled Jeffers, by now a shade more ruddy. "Doesn't matter," answered Tolliver, grinning amiably. Tolliver began to have his doubts the next day; which was "Tuesday" by the arbitrary calender constructed to match Ganymede's week-long journey around Jupiter. His contract guaranteed a pilot's rating, but someone had neglected to specify the type of craft to be piloted. On the bulletin board, Tolliver's name stood out beside the number of one of the airtight tractors used between the dome city and the spaceport, or for hauling cross-country to one of the mining domes. Sometimes there's no reason but them for sending a ship back with a crew instead of in an economy orbit. "Sure," agreed Tolliver thinking, Ohmigod! They found they could send back loaded ships by 'automatic' flight—that is, a long, slow, economical orbit and automatic signalling equipment. Tolliver deliberately dipped one track into an icy hollow. He enlarged upon other dangers to be encountered on the satellite, taking care to impress the newcomer with the daredeviltry of John Tolliver, driver of "missions" across the menacing wastes between dome and port. His charge seemed noticeably subdued, but cleared her throat to request that Tolliver guide her to the office of the manager.
 hot-headed
 hot-headed  stubborn  clever  liar