Convenient or at a suitable time; opportune(adjective)
Auspicious or lucky(adjective)
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Use "favourable" in a sentence
"Earlier this year Mugabe said Malabo was providing his fuel - starved country with oil at what he described as favourable terms."
"(Subtler forms, perhaps arguable, although I remain favourable disposed to-wards him, I mean look at his confrères …) However, the bootlicker Naciri went for broke."
"If he is a friend of the new President, his choice alone indicates a certain favourable interest by the President."