fero

Fero, ferre, tuli, latum is irregular, and the reason is that three unrelated roots have been welded into one verb: fer- for the present, tul- for the perfect, lat- for the participle. In the present the vowel drops in several forms, giving fers, fert, fertis and the bare imperative fer.

Two things to watch. The passive fertur and feruntur very often mean "it is said, they are said", not "is carried". And ferre with an emotion in the ablative is the standard way to say how you took something: aequo animo ferre, "to bear it calmly", graviter ferre, "to take it badly". The compounds are everywhere in this corpus - refero, confero, infero, offero - and English splits the two stems between transfer, refer, fertile on one side and relate, translate, oblation on the other.