ADJ
- big, great
- little
- closely guarded, well-kept
- a charming museum that is one of the city's best-kept secrets (= that not many people know about)
- hidden, inner, innermost, intimate
- That evening she had revealed many of her innermost secrets
- open
- Their affair is an open secret
- dark, guilty, shameful, terrible
- commercial, family, military, official, state, trade
VERB + SECRET
- have
- guard, keep
- Can you keep a secret?
- betray, divulge, let sb in on/into, reveal, tell sb
- She let us into her secret?she'd got engaged
- find out, uncover
SECRET + VERB
- be/get out
- How did the secret get out?
PREP
- in ~
- The film stars were married in secret to avoid publicity
- ~ about
- There was some secret about the source of his wealth
- ~ from
- I have no secrets from you
PHRASES
- make no secret of the fact that … , make a secret of sth
- He refuses to make any secret of his political allegiances
PREP
- ~ behind
- She revealed the secret behind her extraordinary success
- ~ of
- the secrets of staying healthy
PHRASES
- the secret of (sb's) success