1.
straight, directly
In a direct line without curves or turns. Can describe physical direction or going somewhere without detours.
2.
upright, honest
Describing a person's character as straightforward and honest.
Related Words
Compare:
曲がる (to turn, to bend)
Synonym:
正直 (honest, frank (sense 2))
Compare:
斜め (diagonal, slanted)
Related:
真ん中 (center, middle)