early 15c., from secret (adj.) (see secret (n.)) + -ly (2).
the children secretly went to the movies when they were supposed to be at the library
met secretly to discuss the invasion plans
they were secretly delighted at his embarrassment
hoped secretly she would change her mind
secretariat
secretary
secrete
secretion
secretive
secretly
secretory
sect
sectarian
sectarianism
sectary
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