Keywords: affirm, affirmation, approve, approval, yes, acceptance

Found 2 variants for this sign (click on video to enlarge):

Sign Definition

As a Noun

1. A statement in which you say something is true, usually by nodding you head up an down.
2. A statement in which you say something is true, especially when it has been claimed to be not true of you. English = affirmation.
3. The saying of yes to an offer. English = acceptance.
4. The act of saying you like something and that it is acceptable. English = approval.

As a Verb or Adjective

1. To nod your head up and down as a way of indicating your answer or response to something is 'yes'; to say yes. Idiomatic English = give the nod.
2. To say that something is true, especially when it has been claimed to be not true of you. English = affirm.
3. To give someone permission to do something; to okay something.
4. To accept an offer of something; to say something is acceptable. English = approve.

Interactive

1. Used alone to say yes, give acceptance or show approval. English = 'Yes!'