Soleo: To Be Accustomed | Latin Grammar

Soleō means “be accustomed,” “be in the habit,” or, with an infinitive, “usually do.” Its Classical reference principal parts are soleō, solēre, solitus sum. It is semideponent: the present system has active forms, but the productive perfect system uses a participle plus sum with active meaning. An old active perfect soluī and related forms survive in early authors (archaic); they are evidence for lexical variation, not the normal Classical prose paradigm.

The wider pattern is explained under Semi-Deponent Verbs; this page gives the complete lexical reference for soleō.

All unlabelled forms and constructions below are ordinary Classical prose. English speakers often reach first for an adverb such as “usually,” but Latin makes the habitual person the subject of a verb: soleō ambulāre is literally “I am accustomed to walk.”

The Two-System Pattern

The present stem solē- builds soleō, solēbam, and soleam. The perfect system comes from solitus plus forms of sum: solitus sum, solitus eram, solitus sim. The participle agrees with the subject in gender and number, even though the whole phrase translates actively. Ancient grammarians could mechanically generate future forms such as solēbō, but surviving Classical usage does not attest a future paradigm: a future situation is normally expressed by another verb or by a present statement of an established custom.

Prīmā lūce surgere soleō.

I usually get up at dawn.

Māter nostra prīmā lūce surgere solita est.

Our mother used to get up at dawn.

The change from masculine solitus to feminine solita reflects the subject, not a passive patient. Do not invent solēvī from the infinitive; rare archaic soluī is a separately attested formation.

Complete Indicative Paradigm

Tense	1st sg.	2nd sg.	3rd sg.	1st pl.	2nd pl.	3rd pl.
Present	soleō	solēs	solet	solēmus	solētis	solent
Imperfect	solēbam	solēbās	solēbat	solēbāmus	solēbātis	solēbant
Future (not attested in Classical usage)	—	—	—	—	—	—
Perfect	solitus sum	solitus es	solitus est	solitī sumus	solitī estis	solitī sunt
Pluperfect	solitus eram	solitus erās	solitus erat	solitī erāmus	solitī erātis	solitī erant
Future perfect (not attested in Classical usage)	—	—	—	—	—	—

The table uses a masculine subject. For a woman use solita sum; for women solitae sumus; for a neuter plural subject solita sunt. The perfect can refer to a past habit viewed as a whole, while the imperfect solēbam presents the habit as ongoing. In practice both can become “used to,” and discourse perspective decides.

Puerī post scholam in forō lūdere solēbant.

The boys used to play in the forum after school.

Ante bellum hāc viā iter facere solitī sumus.

Before the war we used to travel by this road.

Ut solet, tardus aderit.

As usual, he will arrive late.

The parenthetic phrase ut solet “as is his custom / as usual” is neutral Classical prose; ut fierī solet “as usually happens” is a common impersonal expansion.

Complete Subjunctive Paradigm

Tense	1st sg.	2nd sg.	3rd sg.	1st pl.	2nd pl.	3rd pl.
Present	soleam	soleās	soleat	soleāmus	soleātis	soleant
Imperfect	solērem	solērēs	solēret	solērēmus	solērētis	solērent
Perfect	solitus sim	solitus sīs	solitus sit	solitī sīmus	solitī sītis	solitī sint
Pluperfect	solitus essem	solitus essēs	solitus esset	solitī essēmus	solitī essētis	solitī essent

Again, change solitus/solitī to match the actual subject. The subjunctive is not caused by soleō itself; it appears for the ordinary reasons of Latin clause syntax.

Rogat quid facere soleāmus post cēnam.

He asks what we usually do after dinner.

Cum sōlus ambulāre solēret, comitem recūsāvit.

Since he was accustomed to walk alone, he refused a companion.

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In solitus sit, parse solitus for gender and number before translating. The morphology looks passive, but the meaning is active: “he has been accustomed,” not “he has been accustomed by someone.”

No Ordinary Passive

Habitual soleō does not take an accusative patient, so it has no normal personal passive. Forms such as soleor and solitus sum cannot be paired as a present and perfect passive: solitus sum already belongs to the active-meaning paradigm. An impersonal passive is likewise unnecessary because Latin can make the habitual actor the subject or use fierī solet “it usually happens.”

In marī tempestās subitō orīrī solet.

At sea a storm is apt to arise suddenly.

Here tempestās is the subject of solet and also the understood subject of deponent orīrī. Nothing in the sentence is passive.

Infinitives, Participles, and Other Non-Finite Forms

Category	Form and status
Present infinitive	solēre
Perfect infinitive	solitum esse; solitum fuisse for explicit prior-time framing, both agreeing with their subject
Future infinitive	solitūrum esse or fixed-form solitum īrī, grammatical extrapolations rather than attested Classical production forms
Present participle	solēns, solentis, confined in surviving Classical evidence to rare early/comic use
Perfect participle	solitus, -a, -um, active meaning “accustomed”
Future participle	solitūrus, -a, -um, mechanically formed by grammarians but not an ordinary attested Classical form
Gerund	solendī, solendō, solendum, solendō; uncommon
Supine	solitum; chiefly the source of the participial system

Ancient grammarians can supply imperatives such as solē and solitus estō, but an imperative is not part of the ordinary attested Classical paradigm: one does not normally command a habit directly. Learners should recast the intended command rather than produce solē, solēte or mechanically generated future imperatives. There is no passive imperative.

Dīcit patrem suum hīc cēnāre solitum esse.

He says that his father used to dine here.

In indirect statement, patrem is accusative and solitum agrees with it. English “his father used to dine” does not display that agreement, so learners must inspect the Latin participle.

The present participle is genuinely attested but exceptional, especially in an early comic formula:

Si dixero mendacium, solens meo more fecero.

If I tell a lie, I shall have acted characteristically, in my usual way. — Plautus, Amphitruo 198 (source spelling preserved)

After Plautus, solēns is practically unused. Ordinary prose prefers solitus of a person or an adverb such as saepe when no emphasis on habit is needed.

Choosing the Infinitive and the Tense

The infinitive normally names the repeated action: venīre solet “he usually comes,” querī solet “he is accustomed to complain,” laudārī solet “he is usually praised.” Active, deponent, and passive infinitives are all possible because their voice belongs to the dependent action.

Haec epistula ā magistrō recitārī solet.

This letter is usually read aloud by the teacher.

The main verb solet is active; only recitārī is passive. As with English “usually,” the present often states a general habit, while imperfect solēbat locates a repeated practice in a past time frame.

Nōn ita loquī solēs; quid accidit?

You do not usually speak like that; what happened?

Negative nōn solet means that something is not customary, not necessarily that it never happens. For strict “never,” Latin may use numquam.

Word Family and Lexical Limits

Classical Latin does not build an important productive family of prefixed finite compounds from soleō. Do not infer invented forms from English “accustom.” Related expressions do more useful work: assuēscō means “become accustomed,” cōnsuēscō “become accustomed / be wont,” and adjective insolitus “unaccustomed, unusual.” They have their own stems and must be learned separately.

Ad frīgus paulatim assuēscimus; postea facile tolerāre solēmus.

We gradually become accustomed to the cold; afterward we usually endure it easily.

This contrast is important: assuēscimus presents the acquisition of a habit, whereas solēmus states the established habit.

Common Mistakes

Inventing an active perfect

❌ Cotīdiē hīc ambulāre solēvī.

Incorrect — do not build a perfect solēvī from the present stem; ordinary Classical prose uses solitus sum.

✅ Cotīdiē hīc ambulāre solitus sum.

I used to walk here every day.

Forgetting agreement in the perfect system

❌ Māter nostra prīmā surgere solitus est.

Incorrect — solitus does not agree with feminine māter.

✅ Māter nostra prīmā surgere solita est.

Our mother used to rise early.

Making the dependent infinitive finite

❌ Post cēnam ambulat solet.

Incorrect — the customary action must be an infinitive.

✅ Post cēnam ambulāre solet.

He usually takes a walk after dinner.

Treating a passive infinitive as a passive soleō

❌ Epistula recitārī solētur.

Incorrect — soleō has no ordinary passive solētur.

✅ Epistula recitārī solet.

The letter is usually read aloud.

Key Takeaways

Soleō, solēre, solitus sum is semideponent: active present system, participial perfect system, active meaning throughout.
Make the habitual actor the subject and put the repeated action in the infinitive.
Let solitus agree with its subject in gender and number.
Treat future and imperative forms supplied by mechanical conjugation as grammatical extrapolations, not normal Classical production forms.
Do not manufacture passive forms or a productive solēv- perfect stem; rare archaic soluī is lexical evidence, not a model.

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