arduo
Spanish, adjective/ˈaɾdwo/
arduo is spelled A-R-D-U-O (5 letters) and appears 2.1 times per million words in written Spanish, the 21,921st most frequent Spanish word form (wordfreq, 2021 data). Arduo is a Spanish adjective meaning “very difficult” (English Wiktionary, September 2026). The Spanish Wiktionary (Wikcionario) defines it as “Muy complicado”.
What does arduo mean in English?
adjective
- 1
very difficult
- 2
arduous
Source: English Wiktionary, Spanish section, dump of September 2, 2026 (CC BY-SA 4.0).
How Spanish dictionaries define it
adjective: 1. Muy complicado. 2. Referido a un terreno; escabroso (de superficie desigual), intrincado, fragoso, difícil de recorrer.
The definition in the Spanish Wiktionary (Wikcionario), in Spanish.
Source: Spanish Wiktionary (Wikcionario), dump of September 1, 2026 (CC BY-SA 4.0), through kaikki.org.
Forms of arduo
- ardua feminine
- arduos masculine plural
- arduas feminine plural
Source: English Wiktionary and Spanish Wiktionary (Wikcionario) (dumps of September 2, 2026 and September 1, 2026).
How do you pronounce arduo?
- /ˈaɾdwo/
- [ˈaɾ.ð̞wo]
- [ˈaɾð̞wo]
Sources: English Wiktionary, Spanish Wiktionary (Wikcionario) (dumps of September 2, 2026 and September 1, 2026); recordings from Wikimedia Commons.
English words that translate to arduo
Source: the translation tables of the English Wiktionary, dump of September 2, 2026.
How common is arduo in Spanish?
arduo appears 2.1 times per million words in written Spanish.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).