How do you say 'goodbye' in Latin?

valeo, valere, valui, valitus V 2 1 [XXXAX]

be strong/powerful/influential/healthy; prevail; [vale => goodbye/farewell];

salveo, salvere, -, - V 2 1 [XXXBX]

be well/in good health; [salve => hello/hail/greetings; farewell/goodbye];

valet, valere, -, - V IMPERS 2 1 IMPERS [XXXDX]

farewell, goodbye, adieu (the Roman equivalent of "Live long and prosper");

valedico, valedicere, valedixi, valedictus V INTRANS 3 1 INTRANS [XXXFO]

say goodbye;

valefacio, valefacere, valefeci, valefactus V INTRANS 3 1 INTRANS [XXXFO]

say goodbye;

taken from Wordsonline.html">http://ablemedia.com/ctcweb/showcase/Wordsonline.html

Best Latin term for 'goodbye' was 'vale' (to one person) or 'Valete' (to more than one'.