igh
igh = long /i/ (silent gh)
sigh, high, nigh, thigh, bight, fight, right, might, mighty, light, delight, slight, plight, blight, flight, fright, frighten, bright, sight, eyesight, insight, foresight, hindsight, oversight, tight, uptight, airtight, skintight, copyright, outright, upright, knight, night, tonight, midnight, overnight, nightfall, nighttime, daylight, sunlight, moonlight, starlight, twilight, flashlight, headlight, stoplight, spotlight, limelight, highlight, highway, playwright, height, sleight