straightforward, upright, consecutive, true, uncoiled, neat, vertical, square, unbowed, erect, straight, full-strength.
straight (part of speech: adjective)
straightened (part of speech: verb)
Nellie watched his graceful figure breathlessly, until, like a bow unbent,
he stood suddenly erect again, and beckoned to her without changing the direction of his face.
- "In the Carquinez Woods", Bret Harte.
She even unbent
from her silence and, for the first time, really talked to him.
- "The Branding Iron", Katharine Newlin Burt.
Miss Mary unbent
a little, and condescended to explain.
- "The Joyous Story of Toto", Laura E. Richards.