Yes, mode is a Scrabble word!

Noun

1. How something is done or how it happens

2. A particular functioning condition or arrangement

3. A classification of propositions on the basis of whether they claim necessity or possibility or impossibility

4. Verb inflections that express how the action or state is conceived by the speaker

5. Any of various fixed orders of the various diatonic notes within an octave

6. The most frequent value of a random variable