effectiveness
13 letters · noun · scores 4,200 in SpellHuntr
noun
power to be effective; the quality of being able to bring about an effect
Effectiveness in a sentence
The effectiveness of the drug was well established.
He questioned the effectiveness of the treatment.
effectiveness is a valid word in SpellHuntr, worth 4,200 points (13 letters — longer words score more). Spell it in a live game →
Find every word you can make from the letters in effectiveness →
More 13-letter words →