rigid · upright · erect · stiff · military · attention · proud · confident · chin · chest · alignment · dignified · poise · ramrod · soldier · balance · core · straighten
IDEA.org / Words / stand up straight
Related — posture (Body position, alignment); spine (Column of vertebrae); shoulders (Upper arm joints); backbone · tall · rigid · upright · erect · stiff · military · attention · proud · confident
posture qualitystand up straight ≠ slouch Drooping, lazy posture; hunch over · slump · stoop · hunch · droop
body positionstand up straight ≠ lie down Assume a horizontal position; sit · crouch · kneel · squat · curl up
Word data: Linguabase (CC0) · www.idea.org/words/stand_up_straight