rationalize >> ˈraʃ(ə)n(ə)lʌɪz
Definition: [verb] attempt to explain or justify (behaviour or an attitude) with logical reasons, even if these are not appropriate.
Example: she couldn't rationalize her urge to return to the cottage
Definition: [verb] make (a company, process, or industry) more efficient, especially by dispensing with superfluous personnel or equipment.
Example: if we rationalize production, will that mean redundancies?
Definition: [verb] convert (a function or expression) to a rational form.