occasionally

As an adjective casual

is happening by chance.

As a noun casual

is (british|nz) a worker who is only working for a company occasionally, not as its permanent employee.

As an adverb occasionally is

from time to time; now and then; once in a while; irregularly; at infrequent intervals.

As an adjective moderate

is not excessive; acting in moderation.

As a noun moderate

is one who holds an intermediate position between extremes, as in politics.

As a verb moderate

is to reduce the excessiveness of (something).

As an adverb occasionally is

from time to time; now and then; once in a while; irregularly; at infrequent intervals.

As an adverb occasionally

is from time to time; now and then; once in a while; irregularly; at infrequent intervals.

As an adjective undefined is

lacking a definition or value.

As a noun random

is a roving motion; course without definite direction; lack of rule or method; chance.

As an adjective random

is having unpredictable outcomes and, in the ideal case, all outcomes equally probable; resulting from such selection; lacking statistical correlation.

As an adverb occasionally is

from time to time; now and then; once in a while; irregularly; at infrequent intervals.

As adverbs the difference between occasionally and unexpectedly

is that occasionally is from time to time; now and then; once in a while; irregularly; at infrequent intervals while unexpectedly is in an unexpected manner.

As adverbs the difference between occasionally and generally

is that occasionally is from time to time; now and then; once in a while; irregularly; at infrequent intervals while generally is popularly or widely.

As an adverb occasionally

is from time to time; now and then; once in a while; irregularly; at infrequent intervals.

As an adjective intermittent is

stopping and starting at intervals; coming after a particular time span; not steady or constant.

As a noun intermittent is

(medicine|dated) an intermittent fever or disease.

As adverbs the difference between approximately and occasionally

is that approximately is imprecise but close to in quantity or amount while occasionally is from time to time; now and then; once in a while; irregularly; at infrequent intervals.