| ADA | resoluteness by virtue of being unyielding and inflexible |
|---|---|
| ADA | very hard native crystalline carbon valued as a gem |
| ADA | not capable of being swayed or diverted from a course |
| ADA | not capable of being swayed or diverted from a course |
| ADA | having the hardness of a diamond |
| ADA | consisting of or having the hardness of adamant |
| ADA | inflexibly |
| ADA | a mountain peak in southwestern Washington in the Cascade Range (12,307 feet high) |
| ADA | 2nd President of the United States (1735-1826) |
| ADA | 6th President of the United States and son of the 2nd President (1767-1848) |
| ADA | American Revolutionary patriot |
| ADA | recurrent sudden attacks of unconsciousness caused by impaired conduction of the impulse that regulates the heartbeat |