How the word "sicher" is translated into English
Bist du dir ganz sicher?
[ˈbɪst ˈduː ˈdiːɐ̯ ˈɡants ˈzɪçɐ?]
Are you completely sure?
Er kommt sicher gleich nach Hause.
[ˈeːɐ̯ ˈkɔmt ˈzɪçɐ ˈɡlaɪ̯ç ˈnaːx ˈhaʊ̯zə.]
He'll surely be home soon.
Ich bin nicht sicher, ob er kommt.
[ˈɪç ˈbɪn ˈnɪçt ˈzɪçɐ, ˈɔp ˈeːɐ̯ ˈkɔmt.]
I'm not sure if he's coming.
"sicher" is in the lesson "Adverbs 3" (Level 35), along with 11 other useful words. LinDuo has 180 topic lessons like this one, 2,375 words in total. Every word has an illustration, a transcription and pronunciation in a female and a male voice. Just 10–15 minutes a day is enough to learn them all. Free, and works offline.