thinking
UK: ˈθɪŋkɪŋ | US: ˈθɪŋkɪŋ
n. the process of using one's mind to consider or reason about something
adj. using thought or rational judgment; reflective
The word "thinking" derives from the Old English "þencan" (to conceive in the mind, consider), which is rooted in the Proto-Germanic "*thankjan" (to think). The suffix "-ing" is a productive suffix in English, used to form present participles of verbs (e.g., "running") or nouns denoting actions or results (e.g., "building"). The combination preserves the original verb's core meaning while adapting it to describe the process or state of thought.
Critical thinking is essential for solving complex problems.
She sat quietly, deep in thinking.
His thinking on the matter has evolved over time.
The book challenges conventional thinking about leadership.
Positive thinking can improve mental well-being.