The word(s) "conceal" appears 43 time(s) in 43 verse(s) in Quran in Mohsin Khan translation.

(31) (Say O Muhammad صلى الله عليه وسلم): Verily, He (Allah) knows that which is spoken aloud (openly) and that which you conceal.

(32) There is no sin on you that you enter (without taking permission) houses uninhabited (i.e. not possessed by anybody), (when) you have any interest in them. And Allah has knowledge of what you reveal and what you conceal.

(33) Then We withdraw it to Us a gradual concealed withdrawal.

(34) [As Shaitan (Satan) has barred them from Allah's Way] so they do not worship (prostrate themselves before) Allah, Who brings to light what is hidden in the heavens and the earth, and knows what you conceal and what you reveal. [Tafsir At-Tabari]

(35) And verily, your Lord knows what their breasts conceal and what they reveal.

(36) And your Lord knows what their breasts conceal, and what they reveal.

(37) Whether you reveal anything or conceal it, verily, Allah is Ever All-Knower of everything.

(38) Those who were deemed weak will say to those who were arrogant: "Nay, but it was your plotting by night and day: when you ordered us to disbelieve in Allah and set up rivals to Him!" And each of them (parties) will conceal their own regrets (for disobeying Allah during this worldly life), when they behold the torment. And We shall put iron collars round the necks of those who disbelieved. Are they requited aught except what they used to do?

(39) So let not their speech, then, grieve you (O Muhammad صلى الله عليه وسلم). Verily, We know what they conceal and what they reveal.

(40) Allah knows the fraud of the eyes, and all that the breasts conceal.