(sports) The act of losing, or playing to a pre-determined result, in sports matches after betting against oneself.

(idiomatic, colloquial) To obtain something necessary, especially a dose of an addictive drug or anything else compulsively sought after.

(topology) A theorem which (in one of its simplest forms) states that a continuous function from an n-dimensional unit cube (in ℝⁿ) to itself has a fixed point.

(mathematics) A formula that counts the fixed points of a continuous mapping from a compact topological space X to itself by means of traces of the induced mappings on the homology groups of X.

(quantum chromodynamics) In quantum chromodynamics with massless flavours, where the number of flavours is sufficiently small (i.e. small enough to guarantee asymptotic freedom, depending on the number of colours), an interacting conformal fixed point of the renormalization group where the value of the coupling is less than one (i.e. one can perform perturbation theory in weak coupling).

(idiomatic) To cause injury, distress, or inconvenience to someone, especially as punishment or as a comeuppance.

(slang, derogatory, automobiles) Fiat, the Italian auto maker, due to its commonly perceived frequent breakdowns when used in North America.

Alternative form of clean someone's clock

Synonym of put a spoke in someone's wheel (“to thwart or obstruct someone in the execution of some design”)

A situation in which a group of political parties band together to take opposing sides of certain issues, but take the same side on other issues. If the parties are powerful enough, voters on the opposite side of the other issues are left without a viable voting option. Instead, they must either not vote, vote for a candidate of another political party that stands no chance of winning, or vote for one of the major political parties that most closely aligns with their beliefs.