Crooked
Vine's Expository Dictionary of NT Words [1]
"curved, crooked," was especially used (a) of a way, Luke 3:5 , with spiritual import (see Proverbs 28:18 , Sept.); it is set in contrast to orthos and euthus, "straight;" (b) metaphorically, of what is morally "crooked," perverse, froward, of people belonging to a particular generation, Acts 2:40 (AV, "untoward"); Philippians 2:15; of tyrannical or unjust masters, 1—Peter 2:18 , "froward;" in this sense it is set in contrast to agathos, "good."
Wilson's Dictionary of Bible Types [2]
Job 26:13 (c) This word probably describes the wicked, cruel ways of Satan.
Ecclesiastes 1:15 (b) This refers to things in our life which cannot be straightened out by men. An illustration would be a child that is born deformed, or blind, or with a defective mind, and this cannot be altered nor changed. It evidently refers to things that are wrong, either in the body, or in our circumstances, or in our relationships, which are unhappy, unfortunate and tragic, and which are of such a nature that they cannot be remedied. (See also Ecclesiastes 7:13).
Isaiah 40:4 (b) Our Lord is promising that things in this world, or in the life of His child which may be unrighteous, ungodly, harmful and hindering may be straightened out by His power and be made to fit into GOD's plan.
Philippians 2:15 (a) This describes wicked people whose lives do not measure up to the teaching of the Word of GOD.
Webster's Dictionary [3]
(1): (a.) False; dishonest; fraudulent; as, crooked dealings.
(2): (a.) Not straightforward; deviating from rectitude; distorted from the right.
(3): (imp. & p. p.) of Crook
(4): (a.) Characterized by a crook or curve; not straight; turning; bent; twisted; deformed.
King James Dictionary [4]
Crooked pp. or a.
1. Bent curved curving winding. 2. Winding in moral conduct devious froward perverse going out of the path of rectitude given to obliquity or wandering from duty.
They are a perverse and crooked generation. Deuteronomy 32 .
International Standard Bible Encyclopedia [5]
krook´ed ( עוה , ‛āwāh , עקשׁ , ‛āḳash , עקלקל , '‛ăḳalḳāl , עקלּתון , ‛ăḳallāthōn , פתלתּל , pethaltōl ; σκολιός , skoliós ): Primarily designates something that is bent, twisted or deformed ( Isaiah 27:1; Isaiah 45:2 the King James Version).
Figurative: (1) It designates a course of action that deviates from rectitude, especially deceit, guile, hypocrisy ( Deuteronomy 32:5; Proverbs 2:15; Ecclesiastes 1:15; Luke 3:5; compare Philippians 2:15 ); (2) trials (sent by God, Ecclesiastes 7:13; Lamentations 3:9 ); (3) difficulties (removed by God, Isaiah 42:16 ).