Sherlock Holmes used to say, ‘The game is ____.’

adverb or adjective

1. On foot
2. In the process of development underway

   "a plan is afoot to build a new school"

noun

1. The terminal part of the vertebrate see vertebrate leg upon which an individual stands
2. An invertebrate organ of locomotion or attachment
3. Any of various units of length based on the length of the human foot
4. The basic unit of verse meter consisting of any of various fixed combinations or groups of stressed and unstressed or long and short syllables

   "Each line of the poem contains five feet."

5. Motion or power of walking or running step

   "fleet of foot"

6. Speed, swiftness

   "showed early foot"

7. The lower end of the leg of a chair or table
8. A piece on a sewing machine that presses the cloth against the feed
9. Infantry
10. The lower edge (as of a sail)
11. The lowest part bottom

    "the foot of the hill"

12. The end that is lower or opposite the head

    "the foot of the bed"

13. The part (as of a stocking) that covers the foot
14. Material deposited especially in aging or refining dregs
15. Footlights

idiom

1. To refuse to go near or become involved with (someone or something)

   "That investment is too risky. I wouldn't touch it with a ten-foot pole."

idiom

1. To make a mistake

   "He never put a foot wrong during the campaign."

idiom

1. Used to say that someone would not want to get near something, discuss something, or get involved in something