straight

1 straight /ˈstreɪt/ adjective
straighter; straightest
1 straight
/ˈstreɪt/
adjective
straighter; straightest
Britannica Dictionary definition of STRAIGHT
[also more straight; most straight]
1 
: not having curves, bends, or angles
2 
: vertical or level
3 
always used before a noun : following one after the other in order
: following each other without interruption
4 
: honest and direct
5 
always used before a noun
a  : including only two people or things
b  : not including any things or parts of a different kind
6 
not used before a noun : with everything in its proper place
7 
not used before a noun : agreeing with what is true or what is stated to be true
— see also set/put the record straight at 1record
8 
not used before a noun, informal : having nothing owed by either side
9 
: behaving in a way that is socially correct and acceptable
10 
11 
: not using drugs or alcohol
12 
US, of alcoholic drinks : not mixed with anything : without ice or water added
13 
: not joking or funny : serious — see also straight man

— straightness

noun [noncount]
2 straight /ˈstreɪt/ adverb
2 straight
/ˈstreɪt/
adverb
Britannica Dictionary definition of STRAIGHT
1 
: in a straight or direct way
2 
: in or into a vertical position
3 
a  : without any delay : directly or immediately
b  : without interruption
4 
: in an honest and direct way
5 
: in the usual, normal, or correct way

ramrod straight

— see ramrod

straight off

US, informal
: without delay or hesitation : immediately

straight out

informal
: in a very direct way
3 straight /ˈstreɪt/ noun
plural straights
3 straight
/ˈstreɪt/
noun
plural straights
Britannica Dictionary definition of STRAIGHT
[count]
1 
: a hand of playing cards in poker that contains five cards in sequence (such as a five, a six, a seven, an eight, and a nine)
2 
: a straight part of a racecourse : straightaway — usually singular
3 
informal : heterosexual — usually plural

the straight and narrow

informal
: the way of living that is honest and morally proper