having, showing, discipline

organized, precise

needing a lot of (mental or physical) effort

demanding

very careful; thorough

meticulous, thorough

to place a camera, telescope, flag etc in position

organized, precise

demanding and enforcing obedience; severe; strict; the back end (of a ship or boat)

serious, authoritarian

(of rules) strict, severe; that must be obeyed

rigid, tight