Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
run-up is a noun meaning "a substantial increase over a relatively short period of time". It carries 2 recorded senses.
Definitions, synonyms and semantic relations for run-up come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.