This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

adj. superlative form of weighty: most weighty.

"He had a peculiar way of prefacing his weightiest sentences with a short word, uttered twice in a guttural manner, clearing up his throat, or his "gullick," as he would term it, just before uttering them."

maturest    archest    weightier    amplest    acutest    solemnest    profoundest    high-strained    wiliest    weighty