EQUALISE
equal, match, equalize, equalise, equate
(verb) make equal, uniform, corresponding, or matching; “let’s equalize the duties among all employees in this office”; “The company matched the discount policy of its competitors”
equalize, equalise, get even
(verb) compensate; make the score equal
Source: WordNet® 3.1
Etymology
Verb
equalise (third-person singular simple present equalises, present participle equalising, simple past and past participle equalised)
Non-Oxford British standard form of equalize.
Source: Wiktionary