arduous /ärˈdū-əs/

1. Steep, difficult to climb
2. Difficult to accomplish
3. Laborious

ardˈuously adverb

• t-
• t.
• T
• T.
• ta
• TA
• Ta
• Taal
• tab
• TAB
• tabanid
• Tabanidae
• tabanids
• Tabanus
• tehrs
• tehsil
• tehsildar
• tehsildars
• tehsils
• Teian
• teichopsia
• teichopsias
• te igitur
• teil
• teils