rationalising

/R AE1 SH N AH0 L AY0 Z IH0 NG/
verb
  1. 1

    To make something rational or more rational.

  2. 2

    To justify an immoral act, or illogical behaviour. โ€œThe process of thought by which one justifies a discreditable act, and by which one offers to oneself and the world a better motive for one's action than the true motiveโ€

  3. 3

    To remove radicals, without changing the value of an expression or the roots of an equation.

  4. 4

    To structure something along modern, efficient and systematic lines, or according to scientific principles. This often includes eliminating duplication and grouping like or similar items.

Source: https://en.wiktionary.org/wiki/rationalise, https://en.wiktionary.org/wiki/rationalising, https://en.wiktionary.org/wiki/rationalize