IPA: /ˈsɪli/
KK: /ˈsɪli/
Not serious or showing good sense; often funny or foolish.
The silly joke made everyone laugh.
Comparative: sillier
Superlative: silliest
The word 'silly' originates from Old English 'sælig', meaning happy or fortunate. Over time, its meaning evolved to refer to someone who is foolish or lacking in good sense.
Think of the original meaning of 'happy' in Old English — this helps you remember that 'silly' once described someone who was carefree, but now refers to someone who may act foolishly.