| boyhood |
| boylikeness |
| childish |
| childlikeness |
| coquetting(noun, trifling, merriment, triviality, levity) |
| dallying(merriment, triviality, levity, silliness, superficiality) |
| decline |
| dotardism |
| fatuity(noun, stupidity, foolishness, silliness, imbecility folly) |
| flippancy(merriment, triviality, levity, silliness, superficiality) |
| flirting(merriment, triviality, levity, silliness, superficiality) |
| flummery(merriment, triviality, levity, silliness, superficiality) |
| folly(noun, merriment, triviality, levity, silliness) |
| fribble(merriment, triviality, levity, silliness, superficiality) |
| frippery(merriment, triviality, levity, silliness, superficiality) |
| frivolity(noun, merriment, triviality, levity, playfulness) |
| frivolousness(merriment, triviality, levity, silliness, superficiality) |
| gaiety(merriment, triviality, levity, silliness, superficiality) |
| game(merriment, triviality, levity, silliness, superficiality) |
| giddiness(merriment, triviality, levity, silliness, superficiality) |