The word(s) "crooked" appears 9 time(s) in 9 verse(s) in Quran in Mohsin Khan translation.

(1) Say: "O people of the Scripture (Jews and Christians)! Why do you stop those who have believed, from the Path of Allah, seeking to make it seem crooked, while you (yourselves) are witnesses [to Muhammad صلى الله عليه وسلم as a Messenger of Allah and Islam (Allah's religion, i.e. to worship none but Him Alone)]? And Allah is not unaware of what you do."

(2) Those who hindered (men) from the Path of Allah, and would seek to make it crooked, and they were disbelievers in the Hereafter.

(3) "And sit not on every road, threatening, and hindering from the Path of Allah those who believe in Him, and seeking to make it crooked. And remember when you were but few, and He multiplied you. And see what was the end of the Mufsidun (mischief-makers, corrupters, liars).

(4) Those who hinder (others) from the Path of Allah (Islamic Monotheism), and seek a crookedness therein, while they are disbelievers in the Hereafter.

(5) Those who prefer the life of this world to the Hereafter, and hinder (men) from the Path of Allah (i.e. Islam) and seek crookedness therein - they are far astray.

(6) All the praises and thanks be to Allah, Who has sent down to His slave (Muhammad صلى الله عليه وسلم) the Book (the Qur'an), and has not placed therein any crookedness.

(7) "You will see therein nothing crooked or curved."

(8) On that Day mankind will follow strictly (the voice of) Allah's caller, no crookedness (that is without going to the right or left of that voice) will they show him (Allah's caller). And all voices will be humbled for the Most Gracious (Allah), and nothing shall you hear but the low voice of their footsteps.

(9) An Arabic Qur'an, without any crookedness (therein) in order that they may avoid all evil which Allah has ordered them to avoid, fear Him and keep their duty to Him.