5.1 Morphemes: Free Forms, Bound Forms, and Meaning Units

Morphemes as the smallest useful clues

Morphology is the study of how words are built from meaningful parts. A morpheme is a unit that carries meaning or grammatical information. In English, the word "replayed" has a prefix, a root, and an ending: re- suggests again, play carries the main idea, and -ed marks past time. DLAB-style preparation uses that same habit of looking inside words, but the examples here are original practice-style examples, not official DLAB content.

A free morpheme can stand alone as a word. In English, book, run, bright, and child can appear without extra material. A bound morpheme cannot stand alone in ordinary use. Prefixes such as un- and suffixes such as -ness need a base. Artificial-language drills often make this contrast clearer by giving you invented pieces such as lom for "water" and -ti for "small." If lom means water, then lomti might mean small water or stream, depending on the examples.

The test-relevant habit is to ask what changed and what stayed stable. If three examples share the same ending and all point to a plural idea, that ending is a strong candidate for plural marking. If the same starting piece appears in every word connected to motion, it may be a root or prefix. Do not decide from one example unless the item forces you to. Look for repeated evidence.

Practice-style pattern table

In this table, ep is a better plural guess than nal because ep recurs with different roots. The prefix su is a better location clue because it appears before the root and changes the relationship rather than the object itself. This is the kind of evidence chain you want to build under time pressure.

Morphology questions can feel like vocabulary questions, but vocabulary is usually a trap in aptitude preparation. You are not trying to learn a real lexicon. You are trying to infer the role of each piece. When an invented word is long, break it into likely chunks before choosing an answer. If the chunks do not fit all examples, revise the chunking.

A practical workflow is mark the root first, then mark repeated edges. Roots often appear in several related forms. Prefixes appear before the root; suffixes appear after it. Endings may stack, so one invented word can contain a root, a number marker, and a tense marker. Use the answer choices as evidence too: if three choices differ only by one feature, the item is probably testing that feature.

This matters because the public DLAB facts describe a standardized government aptitude test that measures language-learning potential, not knowledge of a specific language. Public material reports about two hours and 126 multiple-choice questions, so fast pattern handling matters. Morphology is one of the cleanest ways to train that skill without claiming access to protected test content.

Takeaway routine

• Circle or mentally tag the root.
• Compare repeated beginnings and endings.
• Assign a tentative meaning to each repeated piece.
• Test the rule against every given example.
• Choose the answer that preserves the rule with the fewest exceptions.