premier - most important, most successful, first showing of something⏎
regress - recede, fall back, make or become less advanced⏎
parity - similarity, being equal, balance, equality⏎
refurbish - repair, redecorate⏎
rationale - enquiry, reasons or principles (that explain a decision) , inquiry⏎
research - study, inquiry, experiment⏎
register - enrol enlist, officially record something, enroll⏎
portion - part (of a whole)⏎
positive - goods, useful, affirmative, believing⏎
range - variety, vary, series, scope, portfolio⏎