say it: STAHRT-ling
startling is an adjective meaning "so remarkably different or sudden as to cause momentary shock or alarm". It is pronounced /ˈstɑɹtlɪŋ/ — STAHRT-ling. It carries one recorded sense.
so remarkably different or sudden as to cause momentary shock or alarm
“Sydney's startling new Opera House”
“startling news”
“startling earthquake shocks”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for startling come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.