| decision /dɪˈsɪʒn/ | noun from decide | It was a difficult decision, but I chose the cheaper phone. (decide) |
| happiness /ˈhæpinəs/ | noun from happy | Money can't buy happiness. (happy) |
| creative /kriˈeɪtɪv/ | adjective from create | She's very creative — she makes her own clothes. (create) |
| competition /ˌkɒmpəˈtɪʃn/ | noun from compete | He won first prize in a photography competition. (compete) |
| successful /səkˈsesfl/ | adjective from success | The concert was very successful — all the tickets sold out. (success) |
| dangerous /ˈdeɪndʒərəs/ | adjective from danger | It's dangerous to swim here — the sea is very rough. (danger) |
| carefully /ˈkeəfəli/ | adverb from careful | Please drive carefully — the roads are icy. (careful) |
| invitation /ˌɪnvɪˈteɪʃn/ | noun from invite | I got an invitation to Sara's birthday party. (invite) |
| useful /ˈjuːsfl/ | adjective from use | This app is really useful for learning words. (use) |
| unhappy /ʌnˈhæpi/ | opposite of happy, with the prefix un- | He looked unhappy after his team lost. (happy, opposite) |