1. In a serious manner
   "the speech was weighty and it was weightily delivered" 
2. As something very heavy
   "she moved weightily"

See also: weighty

• mostly
• Mosul
• mot
• mot juste
• MOT test
• Motacilla
• Motacillidae
• mote
• motel
• motel room
• motet
• moth
• moth bean
• moth miller
• moth mullein
• moth orchid
• moth plant
• moth-eaten
• moth-resistant
• mothball
• mother
• mother board
• Mother Carey's chicken
• Mother Carey's hen
• mother cell