With enemies like this, it can’t get worse

noun

1. A typically curved structural member spanning an opening and serving as a support (as for the wall or other weight above the opening)
2. Something resembling an arch in form or function
3. Something that has a curved shape like an arch

   "There was a slight arch in her eyebrows."

4. Archway

verb

1. To cover or provide with an arch

   "A bridge arches the stream."

2. To form into an arch

   "She arched her eyebrows."

3. To form an arch

   "Trees arch above the promenade."

4. To take an arch-shaped course

   "The ball arched toward the basket."

adjective

1. Principal, chief

   "your arch opponent/rival"

2. Mischievous, saucy
3. Marked by a deliberate and often forced playfulness, irony, or impudence

   "known for her arch comments"

abbreviation

1. Archaic
2. Archery
3. Architect}; {a_link; architecture

abbreviation

1. Archbishop

prefix

1. Chief principal

   "archfiend"

2. Extreme most fully embodying the qualities of the kind

   "archconservative"

prefix

1. See archi-

noun combining form

1. Ruler leader

   "matriarch"

adjective combining form

1. Having (such) a point or (so many) points of origin

   "endarch"

prefix

1. Primitive original primary

   "archenteron"