IPA: //nɒn.kəʊˈhɪə.rənt//
KK: /nɑnkoʊˈhɪrənt/
Not logically connected or consistent; lacking clarity or organization.
The speaker's noncoherent thoughts made it difficult for the audience to follow along.
Noncoherent → It is formed from "non-" (meaning not) and "coherent" (from Latin "cohaerere", meaning to stick together). The word "noncoherent" means not sticking together or lacking logical connection.
Think of 'not' ('non-') and 'sticking together' ('coherent') to remember that 'noncoherent' describes something that does not hold together logically.