Johnny-on-the-spot
noun
John·ny-on-the-spot ˈjä-nē-ˌȯn-t͟hə-ˈspät 
-ˌän-
: a person who is on hand and ready to perform a service or respond to an emergency
Word History
First Known Use
1880, in the meaning defined above
- hanging over
- hanging paper
- hanging participle
- hanging post
- hanging rail
- hanging side
- hanging sleeve
- hanging stairs
- hanging stile
- hanging together
- hanging up
- hanging valley
- hanging wall
- hanging with
- hangings
- hangle
- hangman
- hangman's halter
- hangman's knot
- hangmanship
- hangmen
- hangment
- hangnail
- hangnails
- hangnest