irrebatible - indisputable, irrefutableSpanish example: Él es de carácter irrebatible. ¡No hay la menor duda!
English example: He is of unimpeachable character. There can be no doubt!
Source: irrebatible - indisputable, irrefutable (https://www.123teachme.com/spanish_feeds/word_of_the_day/2021/2/7)