Straightaway (adverb)

1. Immediately, without delay.
2. Directly, without any changes of direction.
3. Right away, at once.

Origin:

Compound word of straight and away, it is a recent term, likely to have been formed in the last century.

Examples:

1. He straightaway went to the store to buy the groceries.
2. She straightaway began to cook dinner as soon as she arrived home.
3. The airplane took off straightaway after the passengers had boarded.
4. He straightaway went to the doctor after he felt sick.
5. I'll straightaway give you the answer.