Ostruisca

Ostruisca is the third-person singular present subjunctive form of the Italian verb ostruire, meaning to obstruct or to block. As a verse form rather than a standalone word, ostruisca does not have an independent meaning; it functions within sentences to express doubt, necessity, possibility, desire, or emotion in subordinate clauses.

Etymology and morphology: Ostruire derives from Latin obstruere (to obstruct). In modern Italian, verbs with stems ending in -isc-, such as ostruire, use an -isca ending in the present subjunctive for the third-person singular: che ostruisca. The corresponding indicative forms are ostruisce (third-person singular) and ostruiscono (third-person plural) when not in the subjunctive mood.

Usage: Ostruisca appears mainly in formal, literary, or technical contexts where the subjunctive mood is required. It commonly follows verbs or expressions that trigger the subjunctive, such as doubt, necessity, or desire: È possibile che la barriera ostruisca l'ingresso. Comprendo che la barriera ostruisca l'accesso. In everyday speech, many speakers may prefer synonyms or simpler constructions, but ostruire and its subjunctive form remain correct in standard Italian.

Related forms: The verb’s present indicative is ostruisce (lui/lei) and ostruiscono (essi/esse). The past participle is ostruito, and the noun obstructions or obstructions are expressed by ostruzione. The related noun ostacolo means obstacle, but it is not a direct cognate of ost-.

See also: ostruire (verb), ostruzione (obstruction), Italian grammar of the present subjunctive.