callow

As he attempted to build a young team with sell-on value in the future while remaining competitive in the present, his team was callow, inconsistent and flaky.

I was just a callow teen when Jimmy Carter became president.

Quayle’s stricken look — a rictus of shock and humiliation — spoke to the devastation of the rejoinder after which, it’s fair to say, his callow image never fully faded.

Besides looking callow on offense, they wasted a solid bounce-back outing from starter Emerson Hancock, as well.

In a team largely made up of callow youth, Spencer and his fellow underdogs were organised and disciplined and too mentally strong to buckle under the pressure Scotland put on them, which wasn't nearly enough.