Main entry: effortful
Definition: requiring great physical effort
Antonyms: effortless
Definition: requiring or apparently requiring no effort
Antonyms: light
Definition: of comparatively little physical weight or density
Antonyms: light
Definition: psychologically light; especially free from sadness or troubles
Antonyms: light
Definition: not great in degree or quantity or number
Antonyms: light
Definition: (physics, chemistry) not having atomic weight greater than average
Antonyms: light
Definition: of little intensity or power or force
Antonyms: light
Definition: of the military or industry; using (or being) relatively small or light arms or equipment
Antonyms: soft
Definition: yielding readily to pressure or weight
Antonyms: soft
Definition: compassionate and kind; conciliatory
Antonyms: soft
Definition: (of speech sounds); produced with the back of the tongue raised toward the hard palate; characterized by a hissing or hushing sound (as `s' and `sh')
Antonyms: diffuse, diffused, soft
Definition: (of light) transmitted from a broad light source or reflected