Webster's English Dictionary

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heavy

1. heavy \'hev-e-\ aj [ME hevy, fr. OE hefig; akin to OHG hebi-c heavy, OE 
   he]bban to lift - more at HEAVE 1a: having great weight  1b: having a high 
   specific gravity  of an isotope  1c1: having or being atoms of greater than 
   normal mass  of a compound  1c2: containing heavy isotopes  2: hard to 
   bear; specif : GRIEVOUS, AFFLICTIVE {a R@ sorrow} 3: of weighty import : 
   SERIOUS  4: DEEP, PROFOUND  5a: borne down by something oppressive : 
   BURDENED  5b: PREGNANT; esp : approaching parturition  6a: slow or dull 
   from loss of vitality or resiliency : SLUGGISH  6b: lacking sparkle or 
   vivacity : DRAB  6c: lacking mirth or gaiety : DOLEFUL  6d: characterized 
   by declining prices  7: dulled with weariness : DROWSY  8: greater in 
   quantity or quality than the average of its kind or class :  as 8a: 
   unusually large {~ traffic}  8b: of great force {~ seas}  8c: OVERCAST  
   8d1: impeding motion  8d2: full of clay and inclined to hold water  8e: 
   coming as if from a depth : LOUD  8f: THICK, COARSE  8g: OPPRESSIVE {~ 
   odor}  8h: STEEP, ACUTE  8i: LABORIOUS, DIFFICULT  8j: of large capacity or 
   output  9a: digested with difficulty because of excessive richness or 
   seasoning (~ fruitcake} 9b: not properly raised or leavened {~ bread}  10: 
   producing goods (as coal or steel) used in the production of other goo ds 
   {~ industry} 11a: armed with guns of large caliber  11b: heavily armored  
   12a: having stress {~ rhythm} - used esp. of syllables in acce ntual verse 
   12b: being the strongest of three degrees of stress in speech  13: relating 
   to theatrical parts of a grave or somber nature MHEAVY implies having 
   greater density or thickness, or sometimes power, than the average of its 
   kind; WEIGHTY suggests having weight as a positive attribute; PONDEROUS 
   implies having great weight because of size and massiveness with resulting 
   great inertia; CUMBROUS and CUMBERSOME imply heaviness and bulkiness that 
   make for difficulty in grasping, moving, carrying, or manipulating SYN syn 
   WEIGHTY, PONDEROUS, CUMBROUS, CUMBERSOME: 
2. heavy av : in a heavy manner : HEAVILY 
3. heavy n pl  1: heavy cavalry  2: HEAVYWEIGHT  3a: a theatrical role or 
   an actor representing a dignified or imposing pers on 3b: VILLAIN