considerably

As adverbs the difference between considerably and thoroughly

is that considerably is significantly; to a degree worth considering while thoroughly is in a thorough or complete manner.

As adverbs the difference between clearly and considerably

is that clearly is (manner) in a clear manner while considerably is significantly; to a degree worth considering.

As adverbs the difference between considerably and immensely

is that considerably is significantly; to a degree worth considering while immensely is hugely; extremely; vastly.

As adverbs the difference between considerably and strongly

is that considerably is significantly; to a degree worth considering while strongly is in a strong or powerful manner.

As adverbs the difference between numerously and considerably

is that numerously is in a numerous manner; manifoldly while considerably is significantly; to a degree worth considering.

As adverbs the difference between considerably and notably

is that considerably is significantly; to a degree worth considering while notably is as a pointed example; in a notable manner.

As adverbs the difference between considerably and rather

is that considerably is significantly; to a degree worth considering while rather is (obsolete) more quickly; sooner, earlier.

As a verb rather is

(nonstandard|or|dialectal) to prefer; to prefer to.

As an adjective rather is

(obsolete) prior; earlier; former.

As an adverb considerably

is significantly; to a degree worth considering.

As a verb considered is

(consider).

As adverbs the difference between utterly and considerably

is that utterly is completely, entirely, to the fullest extent while considerably is significantly; to a degree worth considering.

As an adjective substantial

is having to substance; actually existing; real; as, substantial life.

As a noun substantial

is anything having substance; an essential part.

As an adverb considerably is

significantly; to a degree worth considering.