We’ve spoken so far about a range of various ‘middle-domain’ events and actions, and in this post I focus in on our final group, related to Spontaneous Processes and Passive-Middles
(See posts one, two, and three to get up to speed. All this work derives primarily from Suzanne Kemmer and Rutger Allan, with some others thrown in for fun)
Spontaneous Process events and the Passive-Middle
Kemmer moves on in her monograph to cover a range of ‘other’ categories that “impinge” on the middle (142), the categories of the “spontaneous events” and the “passive middle”.
A spontaneous event is one in which “the entity undergoing the change [of state] is the chief nominal participant” and “in which no Agent entity receives coding.” That is, there’s a subject, who undergoes a change of state, and no agent is mentioned. There may or may not be a ‘conceivable’ agent.
Allan notes that a spontaneous process thus differs from the passive-middle, because the latter implies an unspecified agent, the SP tends to exclude one. SP often have active counterpart verbs in Greek that are causative.
This includes various possible subcategories. E.g. biological processes: dying, growing, aging; physiochemical: melting, freezing, rusting; changes in properties: ‘greening’, ‘squaring’ (okay, I made that one up, but presumably there exists a language where you can regularly form a verb from the adjective ‘square’ and express the change of state that results in a square).
ἀπόλλυμαι – die
αὐξάνομαι – grow
γίγνομαι – come into being
τρέφομαι – grow up
φύομαι – grow
καίομαι – burn
τήκομαι – melt
λευκαίνομαι – become/grow white
θέρομαι – become warm
φαίνομαι – appear (Allan includes verbs of appearing & disappearing)
Allan also outlines reasons to adopt the “Spontaneous Process” label in preference to anticausative or similar (44) in that the middle form here is not secondary and derivative to a causal version or an active.
For Latin, we find
morior – to die
scindor – to tear, split
nascor – be born
orior – arise (possible, certainly in its existential sense rather than posture)
Kemmer explores why these are middle in terms of the choice between portraying such an event as having an external Initiator (not always possible), or otherwise selecting the Patient as the chief participant and thus the event as ‘autonomous’.(145) In the case that there is an external Initiator, that participant is deemphasised. So “I die” might be an autonomous spontaneous process, or I might be killed by an angry proponent of grammar-translation, but even in the latter case, I have deemphasised the agent of the action.
Some types of non-volitional movement (e.g. shaking, cf. tremblor) may also be treated under this category; as well as generic ‘happen’ type verbs (γίγνομαι).
Kemmer goes on to consider passive-middles, in which an agent is understood to exist, but is deemphasised, whereas Allan treats that category prior to the SM. Allan also helpfully notes that several verbs in the SP category can be considered to occur with or without an external agent, and so categorisation is difficult in absolute terms. Nonetheless, in both cases, the Patient, and the change-of-state event, are the highlighted or dominant features of the presentation.
That basically concludes all the semantic categories treated in Kemmer, and mostly in Allan. And, I hope by now, you have some sense of how most Greek middle verbs readily fall into these categories.
The η/θη “passives” in diachronic and semantic focus
In the rest of today’s post I want to highlight the work of Allan, and Rachel Aubrey, in considering the η / θη aorist and future “passive” forms.
Allan’s work is broader, considering various morphological realisations of η vs θη as well as sigmatic aorists vs ‘passives’. In particularly, he does several interesting things: (1) considers the semantic distrubtion of alternatives, i.e. which categories of middle usage are found with which markers, (2) the morphological distribution, i.e. which stem-formations take which endings, (3) the diachronic development, i.e. how these forms shift over time from Homer onwards.
In Homer, he finds that SP favours η, passive or body motion favours θη. In classical, the distribution of all formation types shifts heavily from η to θη.
Over time, the collection of ‘middle-type’ categories, including the ‘passive-middle’, which are represented by the η/θη types, expands across the middle domain. Notably, Allan finds that the sigmatic aorist middle does not occur for Spontaneous Process or Passive-Middles in Homer, (111) but rather for animate subjects with volitional actions (111). There is overlap for mental process, collective motion, and body motion (112). By the classical period, the sigmatic is being used primarily for (indirect and direct reflexive, perception, mental activity, speech act, and reciprocal action), the θη type for (passive, spontaneous process, mental process, body motion, and collective motion) (117).
Why does this matter? Well, (1) the θη types are not a morphologically encoded passive as opposed to the sigmatic middle. Rather, the passive is a semantic subcategory. (2) that means there are simply two middle morphological forms in Greek, with the θη forms emerging from a “spontaneous process + passive-middle” core, but over time expanding to include other middle-type categories. (3) diachronically, the θη forms come to devour the sigmatic middles altogether; (4) in some verbs, contrastive sigmatic-middle vs. θη middle has semantic contrast, between different types of middle usage.
Rachel Aubrey, as I understand it, has been at work on a Masters’ thesis on the middle voice in Koine for some time, and I’m looking forward to it. She gives some anticipation of it in her article ‘Motivated Categories, Middle Voice, and Passive Morphology’. She begins by highlighting the ways in which (θ)η forms break their expectations in not expressing passive syntax (566) and the fundamental problem with called (θ)η forms ‘deponents’ in expressing an ‘active’ meaning and ignoring the middle (567). On Aubrey’s construction (θ)η entered the language as expressing change of state, then extended to prototypical passives, and onward from there (571-2). Aubrey expresses it well in considering a semantic continuum, and that the sigmatic middles tended to express more agent-like or agent-active events, the (θ)η types as more patient-like. (573)
The -(θ)η- form is better understood as sharing a division of labor in the middle domain with the sigmatic middle forms than as an exclusively passive marker with defective, deponent exceptions. It marks the same set of middle event types subsumed within the semantic middle domain with respect to the other middle-passive morphology in the present and perfect paradigms.
She also reaches further back, to PIE, in seeing the origin of (θ)η in the state-predicate marker *-eh1– which grammaticalizes into an aspect-voice inflectional marker (578-9).
Both Allan and Aubrey suggest that the (θ)η emerged in the aorist (and future) but not present because (θ)η is associated with telicity (i.e. the event has a conceptual ‘end-point’ which is reached), which the imperfective aspect forms (e.g. the present tense), do not.
Aubrey’s article goes on to give a robust prototypical explanation of semantic categories, participant roles, and the like, focused on the (θ)η forms. It concludes robustly with a reconsideration of the (θ)η forms along the same lines as Kemmer and Allan point us to.
Changing our categorization of -(θ)η- from the analogous English counterpart (passive) to a typologically attested middle form alters our view of Greek voice. Instead of seeing it as a passive marker with defective active outliers in an active-passive system, -(θ)η- is rightly treated as marking the less-transitive middle events—including passives—within a larger transitivity continuum in an active-middle system. The middle share of the space divides the labor across two morphological forms in the aorist and future compared to one in the present and perfect.
And with that, I leave you for this post. In coming posts I will discuss some varieties of semi-deponency, talk about Latin’s voice system in more depth, and conclude with some application for reading and for pedagogy.
 Rachel Aubrey, “Motivated Categories, Middle Voice, and Passive Morphology,” in The Greek Verb Revisited: A Fresh Approach for Biblical Exegesis, ed. Steven E. Runge and Christopher J. Fresch (Bellingham, WA: Lexham Press, 2016), 563.
 Rachel Aubrey, “Motivated Categories, Middle Voice, and Passive Morphology,” in The Greek Verb Revisited: A Fresh Approach for Biblical Exegesis, ed. Steven E. Runge and Christopher J. Fresch (Bellingham, WA: Lexham Press, 2016), 575.
 Rachel Aubrey, “Motivated Categories, Middle Voice, and Passive Morphology,” in The Greek Verb Revisited: A Fresh Approach for Biblical Exegesis, ed. Steven E. Runge and Christopher J. Fresch (Bellingham, WA: Lexham Press, 2016), 620.