We shouldn't stop with English definitions of words.
While "impute" has it's English definitions, that discussion becomes about translation rather than word meanings in Scripture.
When you look at the Greek word that translated "impute" in the KJV, for instance, then we can get closer to what God is telling us. A word study shows that this word is about how things are thought of, what we reckon to be true, what is counted as true.
Rom 4:4 Now to him that worketh is the reward not reckoned of grace, but of debt.
2Co 3:5 Not that we are sufficient of ourselves to think any thing as of ourselves; but our sufficiency is of God;
2Co 10:7 Do ye look on things after the outward appearance? If any man trust to himself that he is Christ's, let him of himself think this again, that, as he is Christ's, even so are we Christ's.
2Co 10:11 Let such an one think this, that, such as we are in word by letters when we are absent, such will we be also in deed when we are present.
2Co 12:6 For though I would desire to glory, I shall not be a fool; for I will say the truth: but now I forbear, lest any man should think of me above that which he seeth me to be, or that he heareth of me.
Php 4:8 Finally, brethren, whatsoever things are true, whatsoever things are honest, whatsoever things are just, whatsoever things are pure, whatsoever things are lovely, whatsoever things are of good report; if there be any virtue, and if there be any praise, think on these things.
Luk 22:37 For I say unto you, that this that is written must yet be accomplished in me, And he was reckoned among the transgressors: for the things concerning me have an end.
2Co 11:5 For I suppose I was not a whit behind the very chiefest apostles.
1Pe 5:12 By Silvanus, a faithful brother unto you, as I suppose, I have written briefly, exhorting, and testifying that this is the true grace of God wherein ye stand.
1Co 4:1 Let a man so account of us, as of the ministers of Christ, and stewards of the mysteries of God.
Heb 11:19 Accounting that God was able to raise him up, even from the dead; from whence also he received him in a figure.
2Ti 4:16 At my first answer no man stood with me, but all men forsook me: I pray God that it may not be laid to their charge.
Rom 3:28 Therefore we conclude that a man is justified by faith without the deeds of the law.
Php 3:13 Brethren, I count not myself to have apprehended: but this one thing I do, forgetting those things which are behind, and reaching forth unto those things which are before,
Rom 4:6 Even as David also describeth the blessedness of the man, unto whom God imputeth righteousness without works,
Mar 15:28 And the scripture was fulfilled, which saith, And he was numbered with the transgressors.
Mar 11:31 And they reasoned with themselves, saying, If we shall say, From heaven; he will say, Why then did ye not believe him?
Rom 2:3 And thinkest thou this, O man, that judgest them which do such things, and doest the same, that thou shalt escape the judgment of God?
1Co 13:5 Doth not behave itself unseemly, seeketh not her own, is not easily provoked, thinketh no evil;
1Co 13:11 When I was a child, I spake as a child, I understood as a child, I thought as a child: but when I became a man, I put away childish things.
All uses of this same word. So whatever meaning we determine for this word, it will naturally harmonize with all of these uses. There are other places, I didn't put all occurances, although when I do my own word studies, I do.
I examine the contexts of each use, to see the range of meaning in a word. For the most part, I find the results to be just like this. As I read every place a word appears, it's meaning becomes plain. And generally speaking, the same as the dictionaries define it for us. Not always the English, but the Greek.
Much love!