weighty

UK: /ˈweɪti/ US: /ˈweɪti/ ,(wā′tē)

Inflections of 'weighty' (adj):

weightier

adj comparative

weightiest

adj superlative

WordReference Random House Learner's Dictionary of American English © 2026

weight•y /ˈweɪti/   adj., -i•er, -i•est. 

1. burdensome or troublesome:
   weighty matters on his mind.
2. important.
3. having or using influence or power.

weight•i•ness, n. [uncountable]

WordReference Random House Unabridged Dictionary of American English © 2026

weight•y  (wā′tē), adj., weight•i•er, weight•i•est. 

1. having considerable weight;
   heavy;
   ponderous:
   a weighty bundle.
2. burdensome or troublesome:
   the weightier cares of sovereignty.
3. important or momentous:
   weighty negotiations.
4. having or exerting influence, power, etc.;
   influential:
   a weighty merchant of Boston.

• see weight, -y¹ 1480–90

weight′i•ly, adv. 
weight′i•ness, n. 
Synonyms

• 3. significant, serious, grave, consequential. See heavy. 

Antonyms

• 1, 3. light.
• 3. unimportant.

Collins Concise English Dictionary © HarperCollins Publishers::

weighty / ˈweɪtɪ/ adjective (weightier, weightiest)

1. having great weight
2. important or momentous
3. causing anxiety or worry

ˈweightily adverb

ˈweightiness noun