adjective large in amount, size, or extent; substantial
She added a hefty amount of seasoning to the dish.
The construction workers had to lift hefty materials.
Hefty fees were charged for late payments.
He lifted a hefty weight during his workout.
The package was quite hefty and required extra postage.
In a literary context, 'hefty' can be used to describe a substantial or weighty piece of writing, such as a hefty novel or hefty tome.
In psychology, 'hefty' may be used to describe a person's significant or substantial emotional or psychological burden, such as a hefty trauma or hefty emotional baggage.
A financial analyst may use 'hefty' to describe a large or substantial financial transaction, such as a hefty investment or hefty profit margin.
An engineer may use 'hefty' to describe a large or heavy piece of machinery or equipment, such as a hefty piece of construction equipment or hefty industrial machinery.
A chef may use 'hefty' to describe a large or substantial portion of food, such as a hefty serving of steak or hefty slice of cake.