The term 'give approval to' can be summarized by two crossword solutions: 'ENDORSE' (7 letters) and 'OKAY' (4 letters). ENDORSE is a verb meaning to publicly or officially support or approve of something. It is often used in the context of giving approval to a product, service, or person. OKAY is an informal way of expressing agreement or acceptance. It is often used as a response to a request or suggestion, indicating that the speaker is in agreement with the idea.