gu-Related entries & more
because g- followed by some vowels in English usually has a "soft" pronunciation, a silent -u- sometimes was inserted between the g- and the vowel in Middle English to signal hardness, especially in words from French; but this was not done with many Scandinavian words where hard "g" precedes a vowel (gear, get, give, etc.). Germanic -w- generally became -gu- in words borrowed into Romance languages, but Old North French preserved the Frankish -w-, and English sometimes borrowed both forms, hence guarantee/warranty, guard/ward, etc.
gymno-Related entries & more
before vowels gymn-, word-forming element meaning "naked, stripped, bare," from Greek gymnos "naked, unclad; bare, mere," from a metathesis of PIE *nogw-mo-, suffixed form of *nogw- "naked" (see naked).
Related entries & more
gyro-Related entries & more
word-forming element meaning "gyrating" or "gyroscope," from Greek gyros "a ring, circle" (see gyre (n.)).