The unscrupulous politician was all pious and the symbol of benevolence in front of the sage, his behaviour was extremely unctuous.
The compound was unctuous and smooth.
The soap felt unctuous when it slipped from my hands.
I have decided to clean out my garage next week. - as a verb we are having a clean out at home on the weekend. - as a noun
Example sentence - I heated the water in the kettle to make tea.
When I prepare to write a speech, the idea summary will be found in the topic sentence.