I don't see how that's the opposite. things can appear from time to time at regular intervals. do your intermittent wipers randomly move? no they move at regular intervals.
Let me explain: Periodic has a narrow definition and a broader more ambiguous definition. Which are opposites. For example one could say I get Time magazine on a periodic basis, which is semi-mo...
"irregular intervals" is a more narrow definition, but is not it's opposite. How can something be a narrower/broader definition AND be its opposite? the second definition just allows for non-equ...
Food for thought, Yes, not all the examples of the braoder definition will be opposite the first but in the instances where they are; you have a single word that can be used to convey opposite i...
and let me clarify.
the second definition is *not* synonymous with sporadic. something that fits that second definition *can* be sporadic, but it does not *have* to be.
::spoken with the utmost diplomacy::
and since you say that it can be sporaidic you concede that they're are instances where these definitions are opposites.