erect · rigid · stiff · chair · desk · correction · mother · scolding · attention · military · proper · aligned · core · balance · dignified · poise · straighten · pull
IDEA.org / Words / sit up straight
Related — posture (Body position, alignment); spine (Column of vertebrae); shoulders (Upper arm joints); back · upright · erect · rigid · stiff · chair · desk · correction · mother · scolding
POSTURE QUALITYsit up straight ≠ slouch Drooping, lazy posture; hunch over · slump · hunch · droop · sag
BEHAVIORAL COMPLIANCEsit up straight ≠ slouch Drooping, lazy posture; slump · slack off · zone out · relax · lounge
bodily comportment/disciplinesit up straight ≠ sprawl Extend in disorderly fashion; lounge · flop · recline · loll · spread out
Word data: Linguabase (CC0) · www.idea.org/words/sit_up_straight