Effectual – Successful in producing a desired effect

(Pronounced ih-fek-choo-uhl)

To remember the definition of the word effectual, use the following mnemonic:

The effect you all (effectual) desire was unlikely, but it's been successfully produced.

Examples of effectual in a sentence

It is important to maintain an effectual working relationship with your colleagues.

The tea was boiled in water and the resulting infusion was said to be effectual at calming your nerves.

I have yet to find effectual protection against biting insects.