penoso

Other ways to say it

• arduovery difficult; arduous
• difícildifficult, hard, tough, challenging, rough, tricky, trying, arduous, testing; unlikely (i.e. improbable)
• dolorosopainful
• trabajosolaborious; arduous
• tímidoshy, timid, bashful, coy; diffident
• vergonzososhameful; shy, bashful