"They hardly ever watch television.; It's hardly possible he could lose the election.; Hardly did I arrive when he left.; I could hardly have managed it in less time."
2.AdverbCertainly not; not at all.
"I hardly think they'll come in this bad weather!"
3.AdverbWith difficulty.
4.AdverbHarshly, severely; in a hard manner.
5.AdverbFirmly, vigorously, with strength or exertion.
6.InterjectionNot really.
"I think the Beatles are a really overrated band. ― Hardly!"