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say it: WAY-tee
weighty is an adjective meaning "having relatively great weight; heavy". It carries 5 recorded senses.
powerfully persuasive
“a cogent argument”
“a telling presentation”
“a weighty argument”
of great gravity or crucial import; requiring serious thought
“grave responsibilities”
“faced a grave decision in a time of crisis”
“a grievous fault”
“heavy matters of state”
“the weighty matters to be discussed at the peace conference”
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 weighty 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.