随意 (suí yì)

as one wishes; according to one's wishes; at will; voluntary; consciou

Character breakdown

随 (Suí) · 11 strokes

Simplified form of 隨. Phonosemantic compound. 辶 represents the meaning and 陏 represents the sound.
意 (Yì) · 13 strokes

Thought (意) is the sound (音) that comes from the mind (心). (Oversimplified for brevity. The 音 component in this character has a complicated history.)