The heavy toolbox was hard to carry.

Having a significant weight or mass, making it difficult to lift or move.
She struggled with the heavy equipment.
The heavy hammer made the job easier.
He dropped the heavy bag on the floor.
heavy machinery
heavy tools
heavy load
weighty
bulky
massive
The box is heavy.

Having a lot of weight or being difficult to lift.
This material feels heavy.
The heavy stone was hard to move.
She carried a heavy bag.
heavy load
heavy material
heavy object
weighty
dense
substantial
The box is heavy.

Having a great weight or mass.
This rock feels heavy.
The backpack is too heavy to carry.
He lifted the heavy weights easily.
heavy load
heavy object
heavy material
weighty
bulky
massive
The box is too heavy for me to lift.

Having a great weight or mass.
This bag feels heavy when it's full.
The heavy rain caused flooding in the streets.
He carried a heavy load on his back.
heavy weight
heavy burden
heavy traffic
weighty
massive
bulky
The box is heavy.

Having a great weight or mass; not light.
The heavy rain soaked the ground.
She carried a heavy backpack.
The heavy door was hard to open.
heavy load
heavy traffic
heavy metal
weighty
dense
substantial
There was heavy traffic on the road today.

Large in amount or degree; significant.
She felt a heavy burden on her shoulders.
The storm caused heavy rain throughout the night.
He received heavy criticism for his actions.
heavy rain
heavy workload
heavy fines
substantial
considerable
significant
They decided to heavy the cart with more supplies.

To make something heavier or to load it.
We need to heavy the truck for the trip.
She decided to heavy the basket with fruits.
He will heavy the shelf with books.
heavy load
heavy lifting
heavy burden
load
weight
burden
The box is too heavy for me to lift.

Having a lot of weight; not light.
The suitcase is too heavy to carry.
This book feels heavy in my hands.
He lifted the heavy stone with great effort.
heavy load
heavy rain
heavy traffic
weighty
bulky
massive
The movers carried the heavy with great effort.

A large or heavy object.
The box was too heavy for me to lift.
He dropped the heavy on the floor.
They struggled to move the heavy across the room.
heavy load
heavy weight
heavy object
burden
mass
weight
She felt a heavy sadness after the news.

Difficult to bear or endure; intense.
He carried a heavy burden on his shoulders.
The heavy rain made it hard to see.
She felt a heavy weight in her heart.
heavy heart
heavy load
heavy feeling
intense
severe
overwhelming