It is now imperative that this improvement is a continuing process, not a series of cautious tri- or quadriennial steps, interspersed by protracted passenger surveys, financial re-appraisals and deliberation in endless committees.
Source: wiktionary
Quadriennial
Synonyms for "quadriennial" (14 found)
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Strong matches (4)
Related words (7)
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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.