That is straight; not bent, curved, or crooked. Formerly also †right with: in a line with (obsolete). Now only in right line n. at compounds 2.

Not crooked; free from curvature, bending, or angularity.

Straight; true. Cf. right, adj. 1c. Obsolete.

(Situated) in a straight line; straight.

As straight or exact as a rule. Also as adv.: exactly, precisely. Obsolete. rare.

Straight.

Not bowed or curved; also, freed from bending, straightened.

followed by prep. Immediately after, upon, at the same time with something. Also with adverb, straight after, straight forth, straight forthwith, str…

Not twisted or wrested.

With the sense ‘resembling steel’ (in colour, hardness, etc.), as steel gloss; steel-bright, steel-hard, steel-sharp, steel-straight, steel-strong…

Not twisted or twined.

Not disposed in coils or spiral convolutions; also, relaxed from a spiral form.

Straightened, straight. Obsolete. rare. Cf. rectify, v. 5.

Having no corners, without corners.

(un-, prefix1 affix 2.)

Not bent.

Unbent.

Not bent or deflected.

Without a curve; free from curves; not curved.

Direct, undeviating; completely straight.

(un-, prefix1 affix 2.)

Not warped (literal and figurative).

Without curls.

(un-, prefix1 affix 2.)