“weightier” is a form of
weighty
/ˈweɪti/ adjective
Forms weightier weightiest weightie
- adjective Having a lot of weight; heavy.
- adjective (figurative) Important; serious; not trivial or petty. “a weighty argument”
- adjective Rigorous; severe; afflictive.
Synonyms
grave solemn austere frightful demure serious earnest grievous lack-laughter thoughtful sad sage saturnine sedate solemncholy sober somber sombre staid stern cogent telling heavy corpulent obese rotund
Antonyms
Etymology
From Middle English weighti, weghti, wighti, equivalent to weight + -y.
Cognate with Scots weichty, wechty, wichty, Saterland Frisian wichtich, West Frisian wichtich, Dutch wichtig, gewichtig, German wichtig, Danish vigtig, Swedish viktig.
Compare typologically Russian ве́ский (véskij), весо́мый (vesómyj) (< вес (ves)). Also compare the same meaning development from cognate (by borrowing) Polish waga (< ... < Proto-Germanic *wēgō): ważny (whence Russian ва́жный (vážnyj)).
Webster’s 1913
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “weighty”, CC BY-SA 4.0. Details