Definitions from Wiktionary ( )

▸ adjective:  Laughable or amusing through foolishness or a foolish appearance.
▸ adjective:  (of numbers, particularly prices) Absurdly large.
▸ adjective:  (chiefly Scotland, obsolete) Blessed, particularly:
▸ adjective:  Good; pious.
▸ adjective:  Holy.
▸ adjective:  (now chiefly Scotland and Northern England, rare) Pitiful, inspiring compassion, particularly:
▸ adjective:  (now literary) Innocent; suffering undeservedly, especially as an epithet of lambs and sheep.
▸ adjective:  (now literary) Helpless, defenseless.
▸ adjective:  Insignificant, worthless, (chiefly Scotland) especially with regard to land quality.
▸ adjective:  Weak, frail; flimsy (use concerning people and animals is now obsolete).
▸ adjective:  Sickly; feeble; infirm.
▸ adjective:  (now rustic UK, rare) Simple, plain, particularly:
▸ adjective:  Rustic, homely.
▸ adjective:  (obsolete) Lowly, of humble station.
▸ adjective:  Mentally simple, foolish, particularly:
▸ adjective:  (obsolete) Rustic, uneducated, unlearned.
▸ adjective:  Thoughtless, lacking judgment.
▸ adjective:  (Scotland) Mentally retarded.
▸ adjective:  Stupefied, senseless; stunned or dazed.
▸ adjective:  (cricket, of a fielding position) Very close to the batsman, facing the bowler; closer than short.
▸ adverb:  (now regional or colloquial) Sillily: in a silly manner.
▸ noun:  (colloquial) A silly person.
▸ noun:  (endearing, gently derogatory) A term of address.
▸ noun:  (colloquial) A mistake.

---

▸ Word origin

▸ Words similar to silly
▸ Usage examples for silly

▸ Idioms related to silly
▸ Wikipedia articles (New!)
▸ Popular adjectives describing silly
▸ Popular nouns described by silly
▸ Words that often appear near silly
▸ Rhymes of silly

▸ Invented words related to silly