An abrupt descent (either deliberate or unintentional) from the dignity of the idea which the speaker or writer appeared to be aiming for.
An unsatisfying resolution to a narrative, usually owing to a deus ex machina or similarly trivial resolution of the main conflict.
A figure of speech whereby something is made to seem smaller or less important than it actually is.
Cell division of a diploid cell into four haploid cells, which develop to produce gametes.