The term 'turns suddenly' can be described by the crossword solutions SWERVES (7 letters), zags (4 letters), SKEWS (5 letters), and veers (5 letters). Swerving is a sudden change of direction, while zagging is a sharp turn. Skewing is a turning or twisting motion, and veering is a sudden change in direction. All of these terms describe a sudden change in direction, which is the definition of the term 'turns suddenly'.