ETYM Cf. French bénéficial, Late Lat. beneficialis.
1. Promoting or enhancing well-being; SYN. good.
2. Tending to promote physical well-being; beneficial to health; SYN. good, salutary.
3. Advantageous; bringing good.
ETYM Latin effectivus: cf. French effectif.
1. Able to accomplish a purpose; functioning effectively; SYN. efficient.
2. Producing or capable of producing an intended result or having a striking effect; SYN. effectual, efficacious.
3. Working well as a means or remedy.
4. Existing in fact; not theoretical; real.
5. Exerting force or influence; SYN. good, in effect, in force.
6. (Military) Equipped and ready for service.
1. Exerting or capable of exerting strong physiological or chemical effects.
2. Sufficient to produce a result.
ETYM Latin eficax, -acis, from efficere. Related to Effect.
Marked by qualities giving the power to produce an intended effect.
ETYM Latin efficiens, -entis, p. pr. of efficere to effect: cf. French efficient. Related to Effect.
Being effective without wasting time or effort or expense.
ETYM Cf.Latin operativus, French opératif.
1. Being in force or having or exerting force.
2. Effective; producing a desired effect; SYN. key.
3. Of or relating to a surgical operation.
ETYM Old Eng. soverain, sovereyn, Old Fren. soverain, suvrain, French souverain, Late Lat. superanus, from Latin superus that is above, upper, higher, from super above. Related to Over, Super, Soprano. The modern spelling is due to a supposed connection with reign.
Greatest in status or authority or power; SYN. supreme.