unprecedented

As adjectives the difference between mysterious and unprecedented

is that mysterious is of unknown origin while unprecedented is never before seen or done, without precedent.

As an adjective unprecedented

is never before seen or done, without precedent.

As a letter x is

the twenty-fourth letter of the.

As a symbol x is

voiceless velar fricative.

As adjectives the difference between unforseen and unprecedented

is that unforseen is while unprecedented is never before seen or done, without precedent.

As adjectives the difference between unmatched and unprecedented

is that unmatched is (of a pair of things) not matched; odd while unprecedented is never before seen or done, without precedent.

As a verb unmatched

is (unmatch).

As adjectives the difference between uproarious and unprecedented

is that uproarious is characterized by loud, confused noise, or by noisy and uncontrollable laughter while unprecedented is never before seen or done, without precedent.

As an adverb hitherto

is (formal|or|legal) up to this or that time .

As an adjective unprecedented is

never before seen or done, without precedent.

Unprecedented is a related term of odd.

As an adjective unprecedented

is never before seen or done, without precedent.

As an initialism odd is

oppositional defiant disorder.

As adjectives the difference between singular and unprecedented

is that singular is being only one of a larger population while unprecedented is never before seen or done, without precedent.

As a noun singular

is a form of a word that refers to only one person or thing.

Unprecedented is a related term of unusual.

As adjectives the difference between unprecedented and unusual

is that unprecedented is never before seen or done, without precedent while unusual is unlike what is expected; differing in some way from the norm.

Unprecedented is a related term of strange.

As an adjective unprecedented

is never before seen or done, without precedent.

As a proper noun strange is

.