attitudinal modifier: extra properly, primly, "by the book" - rushing things, half-assing.
For example, "mi setca jau'i lo lante lo tanxe" might be neatly placing it in, "jau'icu'i" is just dropping it normally, and "jau'inai" is sorta apathetically tossing it in there. ".a'ijau'i" is careful effort, ".a'ijau'inai" is frantic/messy effort.