I. adverb
1.
Synonyms: away 3, at once, directly, first off, forthwith, immediately, instanter, now, right away, straightaway
2.
Synonyms: directly 1, dead, direct, due, right, straightly, undeviatingly
II. adjective
1.
Synonyms: direct 2, straightforward, through, uninterrupted
Idioms: as straight as an arrow
Antonyms: circuitous
2.
Synonyms: straightforward 2, aboveboard, forthright, plain dealing
3.
free from admixture or extraneous matter
a shot of straight liquor
Synonyms: neat, plain, pure, unadulterated, undiluted, unmixed
Related Word: unmodified; concentrated; strong
Contrasted words: adulterated, blended, mixed; watered-down; weak
4.
Synonyms: conventional 1, button-down, orthodox, square
III. noun
Synonyms: right 1, good