Noah Webster
Relevant
REL'EVANT, adjective [Latin relever, to relieve, to advance, to raise; re and lever, to raise.]
1. Relieving; lending aid or support.
2. Pertinent; applicable. The testimony is not relevant to the case. The argument is not relevant to the question. [This is the sense in which the word is now generally used.]
3. Sufficient to support the cause.