The "Six Causal Roots" in Buddhism, particularly as described in the Abhidhamma (higher teaching/philosophy) of the Theravada tradition, are the six fundamental mental factors that determine the ethical quality (karma) of a conscious moment and the actions that stem from it.

These six roots are divided into two main categories: the three Unwholesome Roots that lead to suffering, and the three Wholesome Roots that lead to liberation and happiness.

The Three Unwholesome Roots (Akusala Mūla) 😈

These are often called the Three Poisons and are the fundamental causes of all unskillful (unwholesome) thought, speech, and physical action, perpetuating the cycle of suffering (Samsara).

Root	Pāli Term	Meaning and Nature
Greed	Lobha (or Rāga)	Attachment, craving, lust, or desire for pleasant objects or experiences. It's the root of wanting more or wanting to hold on to what one has.
Aversion	Dosa	Hatred, ill-will, anger, resentment, or repulsion towards unpleasant objects or experiences. It's the root of wanting something to go away.
Delusion	Moha (or Avijjā)	Ignorance, confusion, or misunderstanding of reality, particularly the ultimate truths of impermanence (anicca), suffering (dukkha), and non-self (anatta). It underlies both greed and aversion.

Any action, thought, or word rooted in one or more of these three poisons is considered unwholesome (akusala), morally blameworthy, and will ripen into painful or undesirable results (vipāka) in the future.

The Three Wholesome Roots (Kusala Mūla) 😇

These are the direct antidotes to the unwholesome roots and form the foundation for all morally sound (wholesome) thought, speech, and physical action, leading toward well-being and liberation (Nibbāna).

Root	Pāli Term	Meaning and Nature (Antidote to...)
Non-Greed	Alobha	Generosity, non-attachment, or renunciation. (Antidote to Greed)
Non-Aversion	Adosa	Loving-kindness (Mettā), compassion (Karuṇā), or goodwill. (Antidote to Aversion)
Non-Delusion	Amoha (or Paññā)	Wisdom, insight, or correct understanding of reality. (Antidote to Delusion)

An action, thought, or word rooted in one or more of these three factors is considered wholesome (kusala), mentally healthy, and will ripen into pleasant or desirable results. They are not merely the absence of the poisons but actively cultivated mental factors.

The six causal roots are considered the ultimate conditions for moral choices and mental states, serving as the "roots" from which all other mental factors and resulting karma sprout.