Synonyms of the word 
IMPELLING → EFFECTIVE - EFFECTUAL - EFFICACIOUS
impelling
- v. present participle of impel.
effective
- adj. Having the power to produce a required effect or effects.
- adj. Producing a decided or decisive effect.
- adj. Efficient, serviceable, or operative, available for useful work.
- adj. Actually in effect.
- adj. (geometry, of a cycle or divisor) Having no negative coefficients.
- n. (military) A soldier fit for duty.
effectual
- adj. Producing the intended result; entirely adequate.
efficacious
- adj. Effective; possessing efficacy.
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