Flattener

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    Anything that flattens.
  2. 2
    A trade whose terms are based on the assumption that the rate of return will decrease.

    "Provided that the curve doesn't ever flatten too much and the option remains out-of-the-money, then we will put on flatteners when the curve steepens and put on steepeners when the curve flattens."

Example

More examples

"Provided that the curve doesn't ever flatten too much and the option remains out-of-the-money, then we will put on flatteners when the curve steepens and put on steepeners when the curve flattens."

Etymology

From flatten + -er.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.