ἀναγκαῖος ἀνάγκη with or by force: act. constraining, applying force, Il.; ἦμαρ ἀν. the day of constraint, i. e. slavery, Ib.;so, ἀναγκαία τύχη the lot of slavery, or a violent death, Soph.; τῶι τῆς ἀρχῆς ἀναγκαίωι by the compulsory nature of our rule, Thuc.; ἐξ ἀναγκαίου under compulsion, Thuc. of arguments, forcible, cogent, Thuc. pass. constrained, forced, πολεμισταὶ ἀν. soldiers perforce, whether they will or no, Od. necessary, ἀναγκαῖόν ἐστι, like ἀνάγκη ἐστί, c. inf., it is necessary to do a thing, Hdt., etc.; but, ἔνιαι τῶν ἀποκρίσεων ἀναγκαῖαι ποιεῖσθαι necessarily requiring to be made, Plat. τὰ ἀναγκαῖα necessary things, needs, as food, sleep, Plat., Xen.; τὰ ἐκ θεοῦ ἀν. the appointed order of things, laws of nature, Xen. absolutely necessary, indispensable, barely sufficient; ἀν. τροφή ἡ καθʼ ἡμέραν, Thuc.; τὸ ἀναγκαιότατον ὕψος the least height that was absolutely necessary, Thuc.; ἡ ἀναγκαιοτάτη πόλις the least that could be called a city, Plat. of persons, connected by necessary ties, i. e. related by blood, Plat., etc.:— οἱ ἀναγκαῖοι, Lat. necessarii, kinsfolk, Xen., etc. adv. -ως, necessarily, of necessity, perforce, ἀναγκαίως ἔχει it must be so, Hdt.; ἀν. φέρειν to bear as best one can, opp. to ἀνδρείως, Thuc. ἀν. λέγειν only so far as is necessary, Plat.