Underteaching

Part of speech: verb, noun

Definitions

1. Instruction that falls short of what learners need, leaving them without adequate knowledge or skills in the subject
2. The act of providing too little teaching, so that students fail to receive sufficient coverage of a topic
3. Giving insufficient lessons or guidance in a subject, which leaves pupils less prepared than they should be

Etymology: "Underteaching" is the present participle and gerund of "underteach", a verb formed by adding the prefix "under-" to "teach". The prefix carries its familiar senses of "below" or "insufficiently", so to underteach is to teach too little, or to teach a subject below the level or extent that is needed. The pattern is productive in English, which is why it is easy to build a verb like this on the fly. The base verb "teach" goes back to Old English "tǣcan", meaning to show or point out, a sense that stayed close to the word's roots in the idea of making something known. Because "under-" can attach to almost any verb, "underteach" follows the same logic as older pairs such as "undercook" or "underestimate", though it is a far less common word and is mostly found in educational writing.