Bhagavad Gita 18.28 Chapter 18, Verse 28

अयुक्तः प्राकृतः स्तब्धः शठो नैष्कृतिकोऽलसः ।
विषादी दीर्घसूत्री च कर्ता तामस उच्यते ॥१८.२८॥

ayuktaḥ prākṛtaḥ stabdhaḥ śaṭho naiṣkṛtiko'lasaḥ
viṣādī dīrghasūtrī ca kartā tāmasa ucyate

Meaning

The doer who is undisciplined, vulgar, stubborn, deceitful, malicious, lazy, despondent and procrastinating is called tamasic.

Newly written by Bhajan Dhun — scholarly review in progress.

Reference: Bhagavad Gita 18.28 (Chapter 18, Liberation through Renunciation (Moksha Sannyasa Yoga), Verse 28)