infero

Infero, inferre, intuli, illatum is fero with in- on the front, and it inherits every irregularity of the parent: the perfect intuli and the participle illatum are suppletive, borrowed wholesale from another root, and the present has the same short forms as fero (infers, infert, not inferis, inferit).

The construction to learn is the one that matters most: infero takes an accusative of the thing brought and a dative of the person or place it is brought against. Bellum alicui inferre is to make war on someone, and vim inferre is to use force against them. English inference and illation come from it, by way of the logician's sense of "carrying in" a conclusion, which is a long way from Caesar marching standards at a hill fort.