skulduggery
UK[skʌlˈdʌɡəri]US[skʌlˈdʌɡəri]
n
Underhanded or unscrupulous behavior; trickery.
Etymology
The word 'skulduggery' entered English from Scots in the mid-19th century. It is an alteration of the earlier Scots term 'sculduddery', which meant obscenity or lewdness. 'Sculduddery' itself is of obscure origin, though it may be connected to older Scandinavian words. The semantic journey saw the meaning shift from a specific sense of sexual misconduct to the broader, more abstract modern sense of underhanded trickery and deceitful machinations, losing its original carnal connotations while retaining the core idea of dishonorable conduct.
Analysis
The word is a loanword from Scots, where it was an alteration of an earlier Scots term. It is not productively formed from transparent English morphemes and therefore is treated as a simplex (unsegmentable) unit in modern English.
Examples
The election was marred by accusations of political skulduggery.
He suspected some financial skulduggery behind the sudden bankruptcy.
The classic detective story often involves a plot full of skulduggery and red herrings.