By Rachel Mitchell Text Copyright 2018 by Rachel Mitchell

Sound reasons [Noun] (good and sensible reasons).
The candidate gave sound reasons for his decision to apply for the job.
There are sound reasons for questioning accuracy and fairness in the application of the death penalty.
Self-interest [Noun] (considering only the advantage to one's own advantage and well-being, without caring about others).
She cannot abandon her husband for the sake of self-interest and personal gain.
Self-interest is not only the major driver in human behavior to live a happy life.
Scrupulously [Adverb] (in a very careful and thorough way, with great care and attention to every detail).
He is always scrupulously honest in his business activities.
Teachers have to be scrupulously fair in marking examination papers.
Sophisticated [Adjective] (complicated or complex).
They're making very sophisticated weapons.
The network connection devices employ very sophisticated programming.
Sweaty [Adjective] (covered in sweat that makes you feel hot and uncomfortable).
Tom's palms were sweaty and his mouth was dry.
After working in the garden all day, his clothes were all sweaty, and covered with dirt.
Shrink [Verb] (become smaller in size or amount).
The department has been shrinking year by year because of budget cuts. The Japanese population is shrinking.
Stressed out [Adverb] (being anxious, worried and nervous).
She is stressed out about all the work she has at the moment. I've been really stressed out at work recently.
Sanity [Noun] (the ability to think and behave in a normal manner without being mentally ill).
People have begun to doubt her sanity.
He'd been behaving so strangely that they began to doubt his sanity.
To strike up (a conversation, a relationship) [Expression] (to start (to do) something).
She was keen to strike up a conversation with him.
She would often strike up conversations with complete strangers.