التَّكَاثُرُ

A word in the Arabic language will either be 1) a verb or 2) a noun or 3) a particle – التَّكَاثُرُ is a noun

A noun may either be 1) Definite or indefinite 2) Masculine or feminine 3) Singular, dual or plural 4) Nominative, accusative or genitive

التَّكَاثُرُ is the natural state of a definite noun and it is in this state ( مَرْفُوْعٌ) when the noun is: 1) the subject المُبْتَدَأُ or 2) the predicate الخَبَرُ or 3) اسْمُ كَانَ or 4) خَبَرُ إِنَّ or 5) الفَاعِلُ subject of a verb in the active voice or 6) نَائِبُ الفَاعِلِ subject of a verb in the passive voice or 7) it’s a noun of dependent declension a) نَعْتٌ / صِفَطٌ adjectives b) التَّوْكِيْدُ emphatic c) المَعْطُوْفٌ conjunction d) البَدَلُ synonym

The act of multiplying, rivalry, vying in respect of (riches), emulous desire of abundance, vying with one another to excel in multiplying of worldly possessions

To surpass in number or quantity, increase, multiply, happen often, to be much, many, numerous

Grammatical analysis of التَّكَاثُرُ
اسْمٌ مَرْفُوْعٌ بِالضَّمَّةِ الزَّاهِرَةِ
مَعْرِفَةٌمُفْرَدٌمُذَكَّرٌمَرْفُوْعٌك ث ربَاب تَفَاعُلٌتَكَاثَرَ يَتَكَاثَرُتَفَاعُلٌاسْمٌالْمَصْدَرُ
DefiniteSingularMasculineNominativeRootthe accumulatingForm 6PatternNounVerbal noun
competing for more and moreتَفَاعَلَ يَتَفَاعَلُ
to vie in quantity 
seeking increase in wealth اسْمٌ مَرْفُوْعٌ بِالضَّمَّةِ الزَّاهِرَةِ
increase in position, influence 
increase in power, comfort
to be obsessed by greed for more 
Surah/Below is the only verse in the holy Quran containing the derived, form 6, verbal nounالتَّكَاثُرُ
Verse
102-1The mutual desire for piling up (abundance) distracts youأَلْهَاكُمُ التَّكَاثُرُ