The phrase "cover up" can often have negative connotations, implying a deliberate attempt to hide something or deceive someone. However, there are many synonyms for this phrase that can be used in a positive context. For example, "conceal" simply means to keep something from being seen or known, while "protect" suggests safeguarding something or someone against harm. "Mask" can be used to describe the act of hiding something behind a facade, while "camouflage" refers to the use of color or pattern to blend in with one's surroundings. Other synonyms for "cover up" include "hide," "disguise," "veil," "screen," and "cloak".