We found 10 dictionaries that define the word rationalises:

General (7 matching dictionaries)

1. rationalises: Merriam-Webster
2. rationalises: Collins English Dictionary
3. rationalises: Vocabulary.com
4. rationalises: Wordnik
5. rationalises: Cambridge Advanced Learner's Dictionary
6. rationalises: Wiktionary
7. rationalises: TheFreeDictionary.com

Business (1 matching dictionary)

8. rationalises: Legal dictionary

Computing (1 matching dictionary)

9. rationalises: Encyclopedia

Medicine (1 matching dictionary)

10. rationalises: Medical dictionary

(Note: See rationalise as well.)

Definitions from Wiktionary (Rationalise) ▸ verb:  Non-Oxford British English standard spelling of rationalize. [To make something rational or more rational.] ▸ Also see rationalise Opposite: irrationalizes, disregards, ignores, dismisses ▸ Words similar to rationalises ▸ Usage examples for rationalises ▸ Idioms related to rationalises ▸ Wikipedia articles (New!) ▸ Words that often appear near rationalises ▸ Rhymes of rationalises ▸ Invented words related to rationalises