Lewis & Short

attendo (adt-, Dietsch), tendi, tentum, 3, v. a., orig., to stretch something (e. g. the bow) toward something; so only in Appul.: arcum, Met. 2, p. 122, 5.
Hence,

  1. I. In gen., to direct or turn toward, = advertere, admovere: aurem, Att. ap. Non. p. 238, 10; Trag. Rel. p. 173 Rib. (cf. infra, P. a.): attendere signa ad aliquid, i. e. to affix, Quint. 11, 2, 29 (Halm, aptare); so, manus caelo, to stretch or extend toward, App. Met. 11, p. 263, 5: caput eodem attentum, Hyg. Astr. 3, 20.
    Far more freq.,
  2. II. Trop.
    1. A. Animum or animos attendere, or absol. attendere, also animo attendere, to direct the attention, apply the mind to something, to attend to, consider, mind, give heed to (cf.: advertere animum, and animadvertere; freq. and class.)
      1. 1. With animum or animos: animum ad quaerendum quid siet, Pac. ap. Non. p. 238, 15: dictis animum, Lucil. ib.: animum coepi attendere, Ter. Phorm. 5, 6, 28: quo tempore aures judex erigeret animumque attenderet? Cic. Verr. 2, 1, 10: si, cum animum attenderis, turpitudinem videas, etc., id. Off. 3, 8, 35: animum ad cavendum, Nep Alcib 5, 2: jubet peritos linguae attendere animum, pastorum sermo agresti an urbano propior esset, Liv. 10, 4: praeterea et nostris animos attendere dictis atque adhibere velis, Lucil. ap. Non. p. 238, 11: attendite animos ad ea, quae consequuntur, Cic. Agr. 2, 15.
        With a rel.-clause as object: nunc quid velim, animum attendite, Ter. Phorm. prol. 24.
      2. 2. Absol.: postquam attendi Magis et vi coepi cogere, ut etc., Ter. Hec. 2, 2, 25: rem gestam vobis dum breviter expono, quaeso, diligenter attendite, Cic. Mil. 9: audi, audi atque attende, id. Planc. 41, 98; so id. de Or. 3, 13, 50; Phaedr. 2, 5, 6; Juv. 6, 66; 11, 16 al.
        With acc. of the thing or person to which the attention is directed: Glaucia solebat populum monere, ut, cum lex aliqua recitaretur, primum versum attenderet, Cic. Rab. Post. 6, 14: sed stuporem hominis attendite, mark the stupidity, id. Phil. 2, 12, 30; so id. de Or. 1, 35, 161; Sall. J. 88, 2; Plin. Ep 6, 8, 8; Luc. 8, 623 al.: me de invidiosis rebus dicentem attendite. Cic. Sull 11, 33; id. Verr. 2, 1, 10: Quā re attendo te studiose, id. Fin. 3, 12, 40: non attenderunt mandata, Vulg. 2 Esdr. 9, 34; ib. Job, 21, 5; ib. Isa. 28, 23.
        Pass.: versūs aeque prima et media et extrema pars attenditur, Cic. de Or. 3, 50, 192.
        With inf. or acc. and inf. as object: quid futurum est, si pol ego hanc discere artem attenderim? Pompon. ap. Non. p. 238, 17: non attendere superius illud eā re a se esse concessum, Cic. Ac. 2, 34, 111.
        With a rel.clause or a subjunct. with a particle: cum attendo, quā prudentiā sit Hortensius, Cic. Quinct. 20, 63: Hermagoras nec, quid dicat, attendere nec … videatur, id. Inv. 1, 6, 8: forte lubuit adtendere, quae res maxume tanta negotia sustinuisset, Sall. C. 53, 2: Oro, parumper Attendas, quantum de legibus queratur etc., Juv. 10, 251: attende, cur, etc., Phaedr. 2, prol. 14: attendite ut sciatis prudentiam, Vulg. Prov. 4, 1: Attendite, ne justitiam vestram faciatis etc., ib. Matt. 6, 1; ib. Eccli. 1, 38; 13, 10; 28, 30.
        With de: cum de necessitate attendemus, Cic. Part. Or. 24, 84.
        With dat. (post-Aug.): sermonibus malignis, Plin. Ep. 7, 26: cui magis quam Caesari attendant? id. Pan. 65, 2; Sil. 8, 591: attendit mandatis, Vulg. Eccli. 32, 28; ib. Prov. 7, 24: attendite vobis, take heed to yourselves, ib. Luc. 17, 3; ib. Act. 5, 35; ib. 1 Tim. 4, 16.
        So in Suet. several times in the signif. to devote attention to, to study, = studere: eloquentiae plurimum attendit, Suet. Calig. 53: juri, id. Galb. 5: extispicio, id. Ner. 56.
        With abl. with ab (after the Gr. προσέχειν ἀπό τινος; eccl. Lat.): attende tibi a pestifero, beware of, Vulg. Eccli. 11, 35: attendite ab omni iniquo, ib. ib. 17, 11; ib. Matt. 7, 15; ib. Luc. 12, 1; 20, 46.
      3. 3. With animo (ante- and post-class. and rare): cum animo attendi ad quaerendum, Pac., Trag. Rel. p. 79 Rib.: nunc quid petam, aequo animo attendite, Ter. Hec. prol. 20: quid istud sit, animo attendatis, App. Flor. 9: ut magis magisque attendant animo, Vulg. Eccli. prol.; so, in verbis meis attende in corde tuo, ib. ib. 16, 25.
    2. * B. To strive eagerly for something, long for: puer, ne attenderis Petere a me id quod nefas sit concedi tibi, Att. ap. Non. p. 238, 19 (Trag. Rel. p. 173 Rib.).
      Hence, attentus, a, um, P. a.
    1. A. Directed to something, attentive, intent on: Ut animus in spe attentus fuit, Ter. And. 2, 1, 3: Quo magis attentas aurīs animumque reposco, Lucr. 6, 920: Verba per attentam non ibunt Caesaris aurem, Hor. S. 2, 1, 19: si attentos animos ad decoris conservationem tenebimus, Cic. Off. 1, 37, 131: cum respiceremus attenti ad gentem, Vulg. Thren. 4, 17: eaque dum animis attentis admirantes excipiunt, Cic. Or. 58, 197: acerrima atque attentissima cogitatio, a very acute and close manner of thinking, id. de Or. 3, 5, 17: et attentum monent Graeci a principio faciamus judicem et docilem, id. ib. 2, 79, 323; 2, 19, 80; id. Inv. 1, 16, 23; Auct. ad Her. 1, 4: Ut patris attenti, lenonis ut insidiosi, Hor. Ep. 2, 1, 172: judex circa jus attentior, Quint. 4, 5, 21.
    2. B. Intent on, striving after something, careful, frugal, industrious: unum hoc vitium fert senectus hominibus: Attentiores sumus ad rem omnes quam sat est, Ter. Ad. 5, 3, 48: nimium ad rem in senectā attente sumus, id. ib. 5, 8, 31: tum enim cum rem habebas, quaesticulus te faciebat attentiorem, Cic. Fam. 9, 16, 7: paterfamilias et prudens et attentus, id. Quinct. 3: Durus, ait, Voltei, nimis attentusque videris Esse mihi, Hor. Ep. 1, 7, 91: asper et attentus quaesitis, id. S. 2, 6, 82: vita, Cic. Rosc. Am. 15, 44 Matth.: qui in re adventiciā et hereditariā tam diligens, tam attentus esset, id. Verr. 2, 2, 48: antiqui attenti continentiae, Val. Max. 2, 5, 5.
      Comp.: hortor vos attentiori studio lectionem facere, * Vulg. Eccli. prol.
      Hence, adv.: atten-tē, attentively, carefully, etc.: attente officia servorum fungi, Ter. Heaut. 1, 1, 14; audire, Cic. Phil. 2, 5; id. Clu. 3 fin.; id. de Or. 2, 35, 148; id. Brut. 54, 200: legere, id. Fam. 7, 19: parum attente dicere, Gell. 4, 15: custodire attente, Vulg. Jos. 22, 5.
      Comp.: attentius audire, Cic. Clu. 23: acrius et attentius cogitare, id. Fin. 5, 2, 4: attentius agere aliquid, Sall. C. 52, 18: spectare, Hor. Ep. 2, 1, 197: invicem diligere, Vulg. 1 Pet 1, 22.
      Sup.: attentissime audire, Cic. de Or. 1, 61, 259.