The word(s) "admonish" appears 27 time(s) in 25 verse(s) in Quran in Abdullah Yusuf Ali translation.

(11) And We rained down on them a shower (of brimstone): and evil was the shower on those who were admonished (but heeded not)!

(12) Or do they say, "He has forged it"? Nay, it is the Truth from thy Lord, that thou mayest admonish a people to whom no warner has come before thee: in order that they may receive guidance.

(13) Say: "I do admonish you on one point: that ye do stand up before Allah,- (It may be) in pairs, or (it may be) singly,- and reflect (within yourselves): your Companion is not possessed: he is no less than a warner to you, in face of a terrible Penalty."

(14) Nor can a bearer of burdens bear another's burdens if one heavily laden should call another to (bear) his load. Not the least portion of it can be carried (by the other). Even though he be nearly related. Thou canst but admonish such as fear their Lord unseen and establish regular Prayer. And whoever purifies himself does so for the benefit of his own soul; and the destination (of all) is to Allah.

(15) In order that thou mayest admonish a people, whose fathers had received no admonition, and who therefore remain heedless (of the Signs of Allah).

(16) The same is it to them whether thou admonish them or thou do not admonish them: they will not believe.

(17) Thou canst but admonish such a one as follows the Message and fears the (Lord) Most Gracious, unseen: give such a one, therefore, good tidings, of Forgiveness and a Reward most generous.

(18) They said: "Your evil omens are with yourselves: (deem ye this an evil omen). If ye are admonished? Nay, but ye are a people transgressing all bounds!"

(19) And, when they are admonished, pay no heed,-

(20) But We sent aforetime, among them, (messengers) to admonish them;-