Related to.
Regarding
thesaurous: concerning, regarding, in relation to, on the subject of, on, with reference to, as regards, a propos, approximately, around, more or less, all but
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A synonym for varied is diverse.
A synonym for temper is temperament.
I don't think there is a synonym for adjoined it is an antonym.
Secure is a synonym for safe.
A synonym for few is a couple