What this suffix does
-willed describes how strong someone's willpower is: strong-willed, weak-willed.

Suffix · forms adjectives
Describes how strong someone's willpower is: strong-willed (determined) versus weak-willed (easily swayed).
Written by Bryan López, English teacher · Updated
-willed describes how strong someone's willpower is: strong-willed, weak-willed.
Adjective + willed.
This is not a productive rule you can apply freely: it is a closed set of fixed expressions. Learn them one by one as set phrases.
-willed
Tap the button to hear how the ending sounds. Each word in the table has its own audio.
"Strong-willed" and "stubborn" are related but not synonyms. "Stubborn" focuses on the refusal to change, usually seen as a flaw. "Strong-willed" focuses on the force and stability of the will, usually seen as a virtue — admirable persistence, resistance to pressure, the capacity to hold a course despite difficulty. Context can tip it either way, but the default charge is positive.
"Weak-willed" is specifically about willpower and the capacity for self-discipline and resistance to temptation. Someone can be physically powerful, intellectually brilliant, and emotionally resilient while being weak-willed in specific areas (around food, spending, commitments). The weakness is targeted, not general.
A trick to remember it
strong-willed = "having strong willpower", from "will" (the same word as in "free will"). The compound literally describes how much willpower someone has.
Exercise 1 · Form the word
Exercise 2 · Pick the right one
"weak-willed" describes someone who is...
The suffix -willed describes how strong someone's willpower is: strong-willed (determined) versus weak-willed (easily swayed). In Spanish it usually maps to de voluntad / de carácter.
"strong" becomes "strong-willed". It is a typical example of the -willed suffix.
Describes someone's emotional character: warmhearted (kind, affectionate) and coldhearted (unfeeling, unkind).
Describes someone's way of thinking: open-minded (accepting of new ideas) versus narrow-minded (closed off, intolerant).
Describes someone's energy or attitude: high-spirited (lively, energetic) and free-spirited (unconventional, independent).
-tion, -ness, -ful, -ly, -able... every ending you need to understand thousands of words at once.