Bhí fonn troda air. = He was in a fighting mood. Bhí fonn trasnaígeala air. = He was in a mood for contradicting. fonn acrainn = In a mood for making disturbance.
Duine a mbeadh fonn air fuil a dhortadh. = A person who wants to spill blood, .i. in a fight. Thá ráig buile air agus fonn air fuil a dhortadh. = He is in a mad fit and wants to spill blood.