laborioso

Etymology
.

Adjective

 * 1) hard-working, industrious
 * 2) busy
 * 3) laborious, difficult

Etymology
Borrowed from.

Adjective

 * 1) laborious; toilsome requiring much physical effort
 * 2) laborious; industrious hard-working and persistent

Etymology
.

Adjective

 * 1) laborious, toilsome