Verb Group 3

Group 3 verbs are "irregular" — they don't follow the predictable patterns of Group 1 or Group 2 verbs. In Japanese, there are only two main Group 3 verbs: する (to do) and 来る (to come). English speakers often struggle with this because we're used to irregular verbs being scattered throughout our vocabulary (like "go–went–gone" or "eat–ate–eaten"). However, Japanese contains almost NO irregular verbs — just these two, which happen to be extremely common.

Why does this happen? Both する and 来る are ancient, high-frequency words with deep roots in the language. Over centuries, these words evolved differently and didn't follow the phonetic rules that developed later for regular verbs. Instead of thinking "these are exceptions to memorize," think of them as foundational building blocks with their own internal logic. The する family is crucial because it combines with nouns to create verbs: べんきょう (study-noun) + する = べんきょうする (to study as a verb). Similarly, 来る maintains its unique shape because it's such an essential word for Japanese communication.

The key mindset shift: English speakers expect irregular verbs to be unpredictable chaos. But Japanese irregularity is minimal and contained. Once you memorize these two verbs' conjugations, you've conquered nearly all Japanese irregularity. Most Japanese learners will spend far less time fighting irregular verb forms than English learners do. This is actually a strength of the Japanese system — predictability dominates, with just two outliers you'll use constantly and naturally internalize.