Questions: Suppletion (Irregular Forms)

Question 1

A child says 'I goed to the store.' This error most directly demonstrates:

• A. That the child has not yet learned the irregular past tense, indicating a developmental delay
• B. That the productive past tense rule (-ed) is being applied to a lexical item that requires a stored suppletive form
• C. That 'went' is a spelling variant of 'go' that the child hasn't memorized yet
• D. That suppletion breaks down in child language because children learn rules before exceptions

Answer: (B)

The child has learned the regular past tense rule (-ed suffix) and is applying it productively. This overrides the suppletive form 'went,' which must be memorized as a lexical exception rather than derived by rule. This is called 'overregularization' — a normal developmental stage demonstrating active rule learning. Far from indicating delay, it shows the child understands the morphological system. The suppletive form 'went' requires sufficient exposure for entrenchment in the mental lexicon.

Question 2

Which of the following is the clearest example of suppletion, as opposed to ordinary irregular inflection?

• A. run → ran (vowel change within the same root)
• B. go → went (present and past tense derive from historically different verbs)
• C. goose → geese (vowel alternation for plural)
• D. child → children (irregular plural with suffix replacement)

Answer: (B)

Suppletion requires that the two forms share no phonological material and come from historically distinct roots. 'Go' and 'went' share no phonological similarity: 'went' was historically the past tense of 'wend' (to travel), borrowed into the 'go' paradigm. 'Run/ran,' 'goose/geese,' and 'child/children' all involve alternations on a single root (ablaut, vowel alternation, modified suffix) — irregular, but still phonologically related to the same root. Suppletion is the extreme end of allomorphy where etymological sources differ entirely.

Question 3

Suppletion occurs primarily in verb paradigms because verbs have more complex inflectional requirements than nouns or adjectives.

• T. True
• F. False

Answer: False

English has suppletive adjective paradigms: 'good/better/best' and 'bad/worse/worst' both replace the root entirely in comparative and superlative forms rather than adding -er/-est to the base form. 'Better' is not derived from 'good' by any phonological rule; it comes from a distinct Proto-Germanic root. The topic notes verb examples (go/went, the multiple roots of 'be'), but suppletion is not restricted to verbs — it appears wherever frequency effects are strong enough to entrench non-productive forms in the mental lexicon.

Question 4

Low-frequency verbs in English are more likely to have suppletive past tense forms than high-frequency verbs because they've had more time to develop historical irregularities.

• T. True
• F. False

Answer: False

This reverses the actual relationship. Suppletive and irregular forms concentrate in HIGH-frequency words, not low-frequency ones. High-frequency words are used constantly, so their irregular forms are reinforced through repeated exposure and stored whole in the mental lexicon. Low-frequency words are encountered rarely, so their forms are not deeply entrenched — speakers regularize them by analogy (applying the productive -ed rule). When a low-frequency word's suppletive form falls out of use, it typically disappears as speakers default to the regular form.

Question 5

Why do suppletive forms persist in high-frequency words while low-frequency words tend to get regularized, even though high-frequency words are used and 'heard more often'?

Model answer: High-frequency words are stored as whole forms in the mental lexicon rather than being assembled from morphemes each time. Because speakers hear and produce 'went' hundreds of times in childhood, the suppletive form is deeply entrenched as the stored past tense of 'go' — any deviation sounds immediately wrong. Low-frequency words lack this entrenchment: speakers encounter them rarely enough that the irregular form isn't strongly memorized, so when the past tense is needed, they fall back on the productive rule (-ed). High frequency protects suppletive forms from regularization by analogy.

The theoretical implication is significant: morphology is not purely compositional (applying rules to roots). High-frequency paradigms are stored as wholes, with individual suppletive cells filled by whatever historically available form was learned. This supports a 'dual-route' or lexicalist model: productive rules generate regular forms; the lexicon stores irregular paradigms. Suppletion is the extreme evidence for the lexical storage route, because the stored form and the root share nothing phonological — only their paradigmatic relationship links them.