Shortened rule term
ASI
ASI means Ability Score Improvement. Use an ASI when a class feature grants Ability Score Improvement. You normally increase one ability score by 2, or two ability scores by 1 each, within the normal maximum. If feats are allowed, the ASI can often be exchanged for a feat.
Meaning
ASI means Ability Score Improvement.
ASI is short for Ability Score Improvement.
Use At The Table
Use an ASI when a class feature grants Ability Score Improvement. You normally increase one ability score by 2, or two ability scores by 1 each, within the normal maximum. If feats are allowed, the ASI can often be exchanged for a feat.
Limits
- ASI is not a separate action, roll, or resource.
- The class progression tells you which levels grant an ASI.
- Feat replacement depends on the rules your table is using.
FAQ
What is ASI in D&D?
ASI is a rules reference that explains one part of character creation, exploration, combat, or spellcasting.
Read more: ASI 
D&D Portal - ASI Shortened rule term ASI means Ability Score Improvement. Use an ASI when a class feature grants Ability Score Improvement. You normally increase one ability score by 2, or two ability scores by 1 each, within the normal maximum. If feats are allowed, the ASI can often be exchanged for a feat. Full link: https://dnd-portal.com/rules/abbreviations/asi/
How does ASI work?
The ASI page explains the rule, its requirements, and the result during play.
Read more: ASI D&D Portal - ASI Shortened rule term ASI means Ability Score Improvement. Use an ASI when a class feature grants Ability Score Improvement. You normally increase one ability score by 2, or two ability scores by 1 each, within the normal maximum. If feats are allowed, the ASI can often be exchanged for a feat. Full link: https://dnd-portal.com/rules/abbreviations/asi/
How do you use ASI during play?
Use the ASI rules when the situation described on the page occurs during a game.
Read more: ASI D&D Portal - ASI Shortened rule term ASI means Ability Score Improvement. Use an ASI when a class feature grants Ability Score Improvement. You normally increase one ability score by 2, or two ability scores by 1 each, within the normal maximum. If feats are allowed, the ASI can often be exchanged for a feat. Full link: https://dnd-portal.com/rules/abbreviations/asi/