重い

heavy(adjective)

having great weight; difficult to lift or carry

a heavy parcel.

～重さの

heavy(adjective)

having a particular weight

I wonder how heavy our little baby is.

激しい

heavy(adjective)

of very great amount, force etc

heavy rain; a heavy blow; The ship capsized in the heavy seas; heavy taxes.

はなはだしい

heavy(adjective)

doing something to a great extent

He's a heavy smoker/drinker.

重苦しい

heavy(adjective)

dark and dull; looking or feeling stormy

a heavy sky/atmosphere.

むずかしい

heavy(adjective)

difficult to read, do, understand etc

Books on philosophy are too heavy for me.

もたれる

heavy(adjective)

(of food) hard to digest

rather heavy pastry.

重々しい

heavy(adjective)

noisy and clumsy

heavy footsteps.