I.in these tenses Causal, to place or set under, τί τινι Hdt., Pind.; τρεῖς σταυροὺς ὑπίστησι plants three piles in the lake to support a house, Hdt.:—metaph., γνώμας ὑποστήσας σοφάς having laid them as a foundation, Soph.
2.to post secretly or in ambush, Hdt., Xen.
B.Pass., with aor2 act. ὑπ-έστην, perf. ὑφ-έστηκα, ionic part. ὑπ-εστεώς:— to stand under as a support, c. dat., Hdt.
2.to sink to the bottom, settle, τὸ ὑφιστάμενον the milk, opp. to τὸ ἐφιστάμενον (the cream), id=Hdt.
II.to place oneself under an engagement, engage or promise to do, c. inf. fut., ὅσσ᾽ Ἀχιλῆι ὑπέστημεν δώσειν Il., etc.; c. inf. aor., οὔ τίς με ὑπέστη σαῶσαι id=Il.; c. inf. pres., Hdt.:—absol., after promise given, Od.; ὥσπερ ὑπέστη as he promised, Thuc.:—when foll. by acc., an inf. may be supplied, τρίποδας οὕς οἱ ὑπέστη (sc. δώσειν) Il.; ἐκτελέουσιν ὑπόσχεσιν ἥνπερ ὑπέσταν id=Il.
2.to submit to any one, τινι id=Il.
3.c. acc. rei, to submit to, consent to, ὁ τὸ ἐλάχιστον ὑπιστάμενος who offers to take the least, Hdt.; ὑφ. τὸν πλοῦν to undertake it unwillingly, Thuc.; so, ὑφ. τὸν κίνδυνον id=Thuc.: —rarely c. dat., ὑφ. ξυμφοραῖς ταῖς μεγίσταις id=Thuc.
b.to undertake an office, Xen.
III.to lie concealed or in ambush, Hdt., Eur., etc.
IV.to support an attack, to resist, withstand, c. dat., Aesch.; c. acc., Eur., Thuc.:—absol. to stand one's ground, face the enemy, Lat. subsistere, Eur., Thuc.
