çetin

In a sentence

• Çetin bir sınava girdik.

  We took a difficult exam.

  Here, 'çetin' means difficult, describing the challenging nature of the exam.

• Olaylar çetinleşiyor, dikkatli olmalıyız.

  Events are becoming tougher, we need to be cautious.

  In this instance, 'çetin' conveys a sense of increasing difficulty or adversity in the context of evolving circumstances.

• Çetin bugün bize çok güzel bir jest yaptı.

  Çetin made a very kind gesture to us today.

  Here, 'Çetin' is a proper noun, a common male first name in Turkish, unrelated to its adjective meaning.