a·pe·ri·od·ic 
(ā′pîr-ē-ŏdĭk)
(ā′pîr-ē-ŏdĭk)adj.
Occurring without periodicity; irregular.
a′pe·ri·odi·cal·ly adv.
a·pe′ri·o·dici·ty (-ə-dĭsĭ-tē) n.
- inarguable
- inarguably
- Inari
- inarticulacy
- inarticulate
- inarticulately
- inarticulateness
- inartistic
- inartistically
- inasmuch as
- in a/some measure
- in at/on the kill
- inattention
- inattentive
- inattentively
- inattentiveness
- in at the kill
- inaudibility
- inaudible
- inaudibly
- inaugural
- inaugurate
- inauguration
- inaugurator
- inauspicious