| in high spirits(expression, adjective, idiom, pleasant, bright) |
| indifferent(adjective, feature, state, trait) |
| insouciant(adjective, feature, state, trait) |
| intrepid(adjective, bright, energetic, passionate, determined) |
| irresponsible(adjective, feature, state, trait) |
| jokey(adjective, pleasant, bright, happy, merry) |
| jollying(adjective, pleasant, happy, cheerful, jolly) |
| joshing(adjective, pleasant, bright, happy, merry) |
| juiced up(expression, adjective, happy, merry, cheerful) |
| jumping(adjective, moving, happy, energetic, lively) |
| keen(adjective, bright, happy, energetic, wild) |
| laid-back(adjective, feature, state, trait) |
| laid back(adjective, feature, state, trait) |
| languid(adjective, feature, state, trait) |
| larking(adjective, pleasant, bright, happy, merry) |
| lax(adjective, feature, state, trait) |
| light-hearted(adjective, feature, state, trait) |
| liveliest |
| looking good(expression, adjective, pleasant, lively, glad) |
| loony(adjective, pleasant, happy, cheerful, jolly) |