Adjective:

न समझने योग्य, पुष्टक्रूर, दुष्कर, संगीन, सख़्त, दृढ़, ठोस, कड़ा, कठिन,

Adverb:

कठिनता से,

hard's Usage Examples:

Ugh, how hard it is!

Let's just say I learned the hard way that I can take care of myself.

This has been hard for you, as well.

I am working very hard just now.

Why didn't you tell me Dulce was giving you a hard time?

It was hard to say.

Even the ambulance siren was hard to hear.

Don't be too hard on Howard.

It was hard to tell.

I can see why Alex fell so hard for you.

Synonyms:

rough, delicate, catchy, ambitious, ticklish, tall, difficulty, tight, herculean, sticky, elusive, effortful, baffling, fractious, troublesome, awkward, unenviable, trying, nasty, vexed, problematic, hard-fought, difficultness, arduous, tricky, embarrassing, rocky, knotty, challenging, touchy, difficult, rugged, demanding, problematical, thorny, tough, serious,

Antonyms:

frivolity, undemanding, easy, effortless, ease,