Yes, late is a Scrabble word!

Adverb

1. Later than usual or than expected

2. To an advanced time

3. At an advanced age or stage

4. In the recent past

Adjective

1. Being or occurring at an advanced period of time or after a usual or expected time

2. After the expected or usual time; delayed

3. Of the immediate past or just previous to the present time

4. Having died recently

5. Of a later stage in the development of a language or literature; used especially of dead languages

6. At or toward an end or late period or stage of development

7. (used especially of persons) of the immediate past