Stealthily is defined as something done secretly, slyly or in a manner designed not to attract notice. Creeping around silently in the dark to avoid being noticed as you enter a building is an example of a time when you enter stealthily.
by BNR_Tub92BNR September 19, 2016
When something is there, but not really there. Able to be present but not seen or disguised as something else.
Cherie has gotten fat from drinking lots of beer, but you can't tell, because she is stealthily fat!!
by Gbrenner68 November 15, 2016