gy

The letter "g" usually makes the /j/ sound when followed by the vowels e, i, or y.（ge、gi、gy 的 g 通常發 /j/ 的音）

gym, gymnasium, gymnastics, gypsum, gypsy, gyrate, gyroscope, synergy, strategy, stingy, dingy, effigy, allergy, energy, lethargy, analogy, anthology, apology, technology, cryptology*, anthropology*, archeology*, sociology*, ecology*, geology*, radiology*, anesthesiology*, cardiology*, urology*, biology*, virology*, immunology*, pathology*, cytology*, psychology*, theology*, astrology*, herbology*, mythology, methodology, ideology, stodgy, prodigy, eulogy, pudgy
* -ology (suffix): ology 在字尾，指的是各種學科