When the word used to mean 'Joyful; High-spirited merriment'

This was taken at the new National Museum on Stamford Road. It's a pre-1965 (Independence) photo-article about Singapore's post-war progress and her road to Independence.

For once, I'm thanking the powers above for making Singapore a multi-racial, multi-lingual society. It's so wrong to use the english translation in modern context. Fortunately the other languages tell the real story - that Singapore was in a jubilant mood during Malaysia Day then, and not as if Singapore decided to come out of the closet in 1964.