Adverbs serve to express circumstances in talk. These are of four categories - local, temporal, modal and causal. Pronominal (where? - ut) and interrogative adverbs (there? - hezut) are used to identify character of these circumstances. Demonstrative adverbs are used to express character of these circumstances (there - uthez). Other possible division is on authentic and derived (mostly modal) adverbs.
     local adverbs: answers on questions where? (determinative ut), whereto? (ul), which way? (un) and where from? (up).
     temporal adverbs: questions when? (im), since when? (ic), till what time? (il), how long? (ik), how often? (ir).
     modal adverbs: question how? (ec)
     causal adverbs: questions why? (fi), for what? (if), because - firab (because of) >< ifrab (for that reason).


     Derived adverbs, mostly of adjectives and verbs, indicates negation: comprehensibly - ecfimim, incomprehensibly - ecfimimoja.


     Modal adverbs, originated in adhesion affixes, use determinatives  to compare like within adhesion affixes: positive (-0), comparative (-g) a superlative (-gi).