Synonyms for heavy

adverb

• slowly as if burdened by much weight

adjective

• lacking lightness or liveliness
• slow and laborious because of weight
• of great gravity or crucial import; requiring serious thought
• requiring or showing effort
• full of; bearing great weight
• prodigious
• darkened by clouds
• (used of soil) compact and fine-grained
• in an advanced stage of pregnancy
• usually describes a large person who is fat but has a large frame to carry it
• permitting little if any light to pass through because of denseness of matter
• full and loud and deep
• (of sleep) deep and complete
• given to excessive indulgence of bodily appetites especially for intoxicating liquors
• characterized by effort to the point of exhaustion; especially physical effort
• dense or inadequately leavened and hence likely to cause distress in the alimentary canal
• large and powerful; especially designed for heavy loads or rough work
• made of fabric having considerable thickness
• marked by great psychological weight; weighted down especially with sadness or troubles or weariness
• (of an actor or role) being or playing the villain
• of comparatively great physical weight or density
• of great intensity or power or force
• of relatively large extent and density
• (physics, chemistry) being or containing an isotope with greater than average atomic mass or weight
• sharply inclined
• unusually great in degree or quantity or number

noun

• an actor who plays villainous roles
• a serious (or tragic) role in a play

• of the military or industry; using (or being) the heaviest and most powerful armaments or weapons or equipment