1. Arrests are hard to enforce, as the perpetrators work by stealth at night."

2. 17 They had been annihilated by stealth, it was rumoured, or even by sorcery.

3. Bitterns are more squat, and hunt by blending into reedbeds and catching small creatures by stealth

4. Synonyms for Clandestinely include surreptitiously, covertly, confidentially, stealthily, unobserved, under cover, sub rosa, by stealth, secretly and furtively

5. While we are trying to create a common market, we have actually, by stealth, created a common country.