English synonyms about - contact  

upon

adverb

Roget 119: at that time, at which time, at that moment, at that instant; then, on that occasion, upon; not now, some other time.    when; whenever, whensoever; upon which, ... show more

Moby thesaurus: about, above, after which, against, anent, apropos of, as for, as regards, as respects, as to, atop, by, by dint of, by means of, by use of, by virtue of, by way of, concerning, en route to, headed for ... show more.

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