Not real; unreal, imaginary.
Not real; not of the real numbers.
A nonreal number.
Nonsensical.
Resulting from the substitution of a nucleotide in a sense codon, causing it to become a stop codon (not coding for an amino-acid).
An emphatic rejection of something one has just heard and does not believe or agree with.
A type of poetry that contains strange or surreal ideas, as, for example, that written by Edward Lear.
That which is silly, illogical and lacks any meaning, reason or value; that which does not make sense.
Something foolish.
Letters or words, in writing or speech, that have no meaning or pattern or seem to have no meaning.
An untrue statement.
A damaged DNA sequence whose products are not biologically active, that is, that does nothing.
To make nonsense of;
To attempt to dismiss as nonsense; to ignore or belittle the significance of something; to render unimportant or puny.
To joke around, to waste time