A friend in need is a phrase that refers to someone who is in need of help and support. Aider is a 5 letter word meaning one who helps or assists another, an ALLY is a 4 letter word meaning a person or group that is associated with another as a helper or supporter, a SAVIOR is a 6 letter word meaning one who rescues or saves another from danger or difficulty, and Johnny on the spot is a 15 letter phrase meaning someone who is ready and available to help when needed.