on the fence

indeciso, sin decidirse

• I'm still on the fence about the new role — there are pros and cons.
• Sarah is on the fence about whether to move to the city or not.
• The committee is on the fence regarding the proposal's approval.

This idiom is commonly used in both spoken and written English to describe situations where someone has not made a decision. It is informal and used by both young and older speakers. It is suitable for everyday conversations and non-formal situations.

A common mistake is to translate the Spanish 'sentado en la valla' directly into English, which is not something English speakers say. Spanish speakers might also use it incorrectly in overly formal contexts, such as academic essays, where more neutral language is preferred.

• the elephant in the room
  el elefante en la habitación, lo evidente que nadie menciona
• the tip of the iceberg
  la punta del iceberg
• a blessing in disguise
  una bendición disfrazada, un mal que viene para bien
• by and large
  en general, en términos generales