Perhaps this has been discussed before. 1 Tim 6:4
NWT
4 he is puffed up [with pride], not understanding anything, but being mentally diseased over questionings and debates about words. From these things spring envy, strife, abusive speeches, wicked suspicions
Hee is proud, knowing nothing, but doting about questions, and strifes of wordes, whereof commeth enuie, strife, railings, euill surmisings,
- King James Version (1611) - Compare to scan of original 1 Timothy chapter 6
he is conceited {and} understands nothing; but he has a morbid interest in controversial questions and disputes about words, out of which arise envy, strife, abusive language, evil suspicions,
- New American Standard Version (1995)
he is puffed up, knowing nothing, but doting about questionings and disputes of words, whereof cometh envy, strife, railings, evil surmisings,- American Standard Version (1901)He has an over-high opinion of himself; being without knowledge, having only an unhealthy love of questionings and wars of words, from which come envy, fighting, cruel words, evil thoughts,- Basic English Biblehe is puffed up, knowing nothing, but sick about questions and disputes of words, out of which arise envy, strife, injurious words, evil suspicions,- Darby BibleHe is proud, knowing nothing, but sick about questions and strifes of words; from which arise envies, contentions, blasphemies, evil suspicions, - Douay Rheims BibleHe is proud, knowing nothing, but doting about questions and strifes of words, from which cometh envy, strife, railings, evil surmisings, - Webster's Biblehe is puffed up with pride and has no true knowledge, but is crazy over discussions and controversies about words which give rise to envy, quarrelling, revilings, ill-natured suspicions,- Weymouth Biblehe is conceited, knowing nothing, but obsessed with arguments, disputes, and word battles, from which come envy, strife, insulting, evil suspicions,- World English Biblehe is proud, and kan no thing, but langwischith aboute questiouns and stryuyng of wordis, of the whiche ben brouyt forth enuyes, stryues, blasfemyes, yuele suspiciouns, fiytingis of men,- Wycliffe Biblehe is proud, knowing nothing, but doting about questions and word-striving, out of which doth come envy, strife, evil-speakings, evil-surmisings,
- Youngs Literal Bible The phrase mentally diseased seems a bit strong in comparison to other translations.