1. Increasing by successive addition
   "the eventual accumulative effect of these substances"
   - cumulative 
2. Marked by acquiring or amassing
   "we live in an accumulative society"

See also: accumulate, acquisitive, additive

• object-oriented programming language
• objectification
• objectify
• objection
• objectionable
• objectionableness
• objectionably
• objective
• objective case
• objective lens
• objectively
• objectiveness
• objectivism
• magazine article
• magazine publisher
• magazine rack
• magdalen
• Magdalena
• Magdalena River
• Magdalene
• mage
• Magellan
• Magellanic Cloud
• Magen David
• magenta