Additudinals (not sure how to write them) are a concept in another auxlang called 'lojban'. Simply they are (mostly) mono-syllabic words that allow you to convey your emotion. How do you do this in esperanto?
For example in english, we have 'wow' and 'ow' and if we're mad we have curse words. Isnt there anyway to convey similar ideas in esperanto?