featherheaded
Lacking serious thought
Featherheaded means foolish, silly, or scatterbrained—having a head as light and insubstantial as feathers rather than solid brains.
The word is mildly dismissive rather than harsh: Her featherheaded cousin forgot the tickets again.
It's old-fashioned and somewhat literary, more likely encountered in Victorian novels than contemporary speech.
Lacking intelligence or quickness
- daftSilly or foolish
- doltishSlow and dense
- scatterbrainedLacking mental focus
- sillyFrivolous or absurd
simpleminded · airheaded · brainless · ditzy · vapid · empty-headed · birdbrained · clueless
Erratically disloyal in affection
- capriciousSubject to sudden changes
- whimsicalPlayfully fanciful or erratic
- giddyDizzy or excitedly silly
- skittishProne to nervous fright
mercurial · impulsive · erratic · changeable · inconstant · flippant · frivolous · superficial
Inattentive to immediate surroundings
- distractedUnable to concentrate
- unfocusedWithout clear direction
- preoccupiedMentally elsewhere, not present
- daydreamingIdle mental wandering
spacey · dreamy · forgetful · oblivious · heedless · unmindful · scatty · wool-gathering
dim-witted
Lacking intelligence or quickness
- daftSilly or foolish
- doltishSlow and dense
- scatterbrainedLacking mental focus
silly · simpleminded · airheaded · brainless · ditzy · vapid · empty-headed · birdbrained · clueless · obtuse
fickle
Erratically disloyal in affection
- capriciousSubject to sudden changes
- whimsicalPlayfully fanciful or erratic
- giddyDizzy or excitedly silly
skittish · mercurial · impulsive · erratic · changeable · inconstant · flippant · frivolous · superficial · light-minded
absentminded
Inattentive to immediate surroundings
- distractedUnable to concentrate
- unfocusedWithout clear direction
- preoccupiedMentally elsewhere, not present
daydreaming · spacey · dreamy · forgetful · oblivious · heedless · unmindful · scatty · wool-gathering · vague
featherheadedserious
Weighty and requiring attention
grounded · levelheaded · serious-minded · thoughtful · sober