Why Macrons Matter There are some obvious places where macrons matter, e.g. the ablative singular of the 1st declension (Rōma versus Rōmā), infinitives in -ere versus -ēre, the future perfect -eris versus the perfect subjunctive -erīs, and so forth. Sometimes they help distinguish similar looking words, like peritus versus perītus, os versus ōs, and cecidī… Continue reading Macrons