せ, in hiragana, or セ in katakana, is one of the Japanese kana, each of which represents one mora. Both represent the sound [se], and when written with dakuten represent the sound [ze].
'せ' is romanized 'ze'.
Word beginning with '':
- 世界/せかい (sekai -> the world; the universe)
- 先生/せんせい (sensei -> teacher; master)
- せりふ (serifu -> speech; one's lines)
- 千/せん (sen -> 1000)
The character 'せ' may also be combined with a dakuten, changing it into 'ぜ' in hiragana, and 'ze' in Hepburn romanization. With the dakuten added the pronunciation is changed, to 'ze'. せ + " (dakuten) = ぜ (look below)
‘ぜ’ is romanized (pronounced) 'ze' as in 'zebra'.
Word with 'す':
- ぜんぜん (zenzen -> not at all [negative])
Task: You shall write 'せ' & 'ぜ' 50 - 100 times in your textbook. If you want, like with the previous lessons, write 'せ' 70 times and 'ぜ' 30 times. Memorize the shape, the stroke order, the sound, the pronunciation (echo the sound of the character each time you write it down), etc.
And after you've done that, write 'さ', 'し', 'す', and 'せ' one after each repetitively (さ, し, す, せ, さ, し, す, せ, etc.) 50 times (100 if you have time).