Yes, hardy is a Scrabble word!

Adjective

1. Having rugged physical strength; inured to fatigue or hardships

2. Able to survive under unfavorable weather conditions

3. Invulnerable to fear or intimidation

Noun

1. United States slapstick comedian who played the pompous and overbearing member of the Laurel and Hardy duo who made many films (1892-1957)

2. English novelist and poet (1840-1928)