Select the most appropriate one-word substitution for the given group of words. 

Examine one's motives or look inwards 

Introspect

The most appropriate one-word substitution for "examine one's motives or look inwards" is introspect.

• Meditative means involving or characterized by meditation.
• Medicative means having the power to induce meditation.
• Sedative means having a calming or tranquilizing effect.

The word introspect comes from the Latin words "intro," meaning "within," and "specere," meaning "to look." To introspect means to examine one's own thoughts, feelings, and motives. This can be done through a variety of methods, such as meditation, journaling, or simply taking some time to be alone with one's thoughts.