favourable

/ (ˈfeɪvərəbəl, ˈfeɪvrə-) /

advantageous, encouraging, or promising

giving consent

Derived forms of favourable

favourableness or US favorableness, noun favourably or US favorably, adverb

Mustasim sent a deputation to Hulagu, stalling for time, but it was too late to surrender on favourable terms.

In Threatening Baghdad, Militants Seek to Undo 800 Years of History |Justin Marozzi |August 16, 2014 |DAILY BEAST
Of course, under a favourable licensing policy, U.S. persons need to come in and seek a license – without that, we cannot act.

How American Economic Sanctions Are Hurting Innocent Students in Iran, Cuba, & Sudan |Joshua Kopstein |February 9, 2014 |DAILY BEAST
The position of those who remained was regulated in a series of decrees, adverse to the system, but favourable to the inmate.

Lectures on the French Revolution |John Emerich Edward Dalberg-Acton
The present, he said, seemed a most favourable moment for destroying those dangerous pretenders, Ki Ki and Kauc.

Wood Magic |Richard Jefferies

Martin V. published a favourable bull, but it was ineffectual.

Encyclopaedia Britannica, 11th Edition, Volume 15, Slice 4 |Various
He remained at Caubul with no hope of bringing matters to a favourable issue; but because it was convenient to remain.

History of the War in Afghanistan, Vol. I (of 3) |Sir John William Kaye
A favourable wind would tear the field loose from the cliffs and urge it to sea.

Billy Topsail, M.D. |Norman Duncan