Yoga Sūtra Chapter Two verse 3

अविद्यास्मितारागद्वेषाभिनिवेशः क्लेशाः ॥३॥

avidyā-asmitā-rāga-dveṣa-abhiniveśāḥ kleśāḥ ||3||

The afflictions are illusion, the sense of ‘I’ am-ness, attraction,
aversion and the will to stay alive.

avidyā - illusionasmitā - the sense of 'I' am-nessrāga - colour; attraction; delight in; vehement desire of; a musical note, harmony, melodydveṣa - aversion, hatred. dislike, repugnanceabhiniveśa - tenacity; the will to stay alive; fear of death;kleśa - afflictions

Commentaries and Reflections

T Krishnamacharya:

“These five Kleśa surround the heart of every individual.
They are related to the three Guṇa known as Sattva, Rajas and Tamas.
As long as one chooses not to inquire into the true nature of one’s self and acts mechanically,
they will unknowingly contribute to the dominance of the Kleśa.”

TKV Desikachar:

Avidyā is anything else other than Vidyā.

We may have intellectual Vidyā,
but in reality we follow some deeper force of Avidyā.