18-letter words containing f, i, s, o, n
- warrant of fitness — a six-monthly certificate required for motor vehicles certifying mechanical soundness
- wild passionflower — the maypop, Passiflora incarnata.
- with flying colors — with flying colors, with an overwhelming victory, triumph, or success: He passed the test with flying colors.
- writ of assistance — a writ issued by a superior colonial court authorizing officers of the British crown to summon aid and enter and search any premises.
- wrongful dismissal — the act of making someone redundant for reasons which are illegal or unjust
- zone of saturation — the ground below the water table