indivisible
Word family (noun) divide division subdivision (adjective) divided ≠ undivided divisible ≠ indivisible divisive (verb) divide subdivide
From Longman Dictionary of Contemporary EnglishRelated topics: Numbersindivisiblein‧di‧vis‧i‧ble /ˌɪndəˈvɪzəbəl◂/ adjective SEPARATEsomething that is indivisible cannot be separated or divided into parts OPP divisible —indivisibly adverb