Zany (Adjective) - सनकी
Antonyms:Ordinary/Run-of-the mill/Conventional.

Zeal (Noun) - उत्साह/जोश
Antonyms:Apathy/Indifference.

Zealous (Adjective) - उत्साही
Antonyms:Apathetic/Indifference.

Zenith (Noun) - उच्चतम स्थान
Antonyms:Nadir/Bottom.

Zest (Noun) - उत्साह
Antonyms:Apathy/Indifference/Distaste.