aestuo, āvi, ātum, 1,
v. n. aestus, to be in agilation or in violent commotion, to move to and fro, to rage, to toss, to boil up. Lit. Of fire, to rage, burn: aestuat ut clausis rapidus fornacibus ignis, as the fire heaves and roars in the closed furnaces, Verg. G. 4, 263: tectus magis aestuat ignis, Ov. M. 4, 64.
—Hence, Of the effect of fire, to be warm or hot, to burn, glow; both objectively, I am warm (Fr. je suis chaud), and subjectively, it is warm to me, I feel warm (Fr. j'ai chaud). Object.: nunc dum occasio est, dum scribilitae aestuant (while the cakes are warm) occurrite, Plaut. Poen. prol. 43; Verg. G. 1, 107: torridus aestuat aer, glows, Prop. 3, 24, 3; Luc. 1, 16.
— Subject., to feel warmth or heat (weaker than sudare, to sweat, and opp. algere, to be cold, to feel cold; v. Doed. Syn. 3, 89): Lycurgi leges erudiunt juventutem esuriendo, sitiendo, algendo, aestuando, Cic. Tusc. 2, 14, 34: ille cum aestuaret, umbram secutus est, id. Ac. 2, 22: sub pondere, Ov. M. 12, 514; Juv. 3, 103.
— Of the undulating, heaving motion of the sea, to rise in waves or billows (cf. aestus): Maura unda, Hor. C. 2, 6, 4: gurges, Verg. A. 6, 296.
— Of other things, to have an undulating, waving motion, to be tossed, to heave: in ossibus umor, Verg. G. 4, 308: ventis pulsa aestuat arbor, Lucr. 5, 1097; Gell. 17, 11, 5.
—Of an agitated crowd, Prud. 11, 228.
— Trop. Of the passions, love, desire, envy, jealousy, etc., to burn with desire, to be in violent, passionate excitement, to be agitated or excited, to be inflamed: quod ubi auditum est, aestuare (hist. inf.) illi, qui dederant pecuniam, Cic. Verr. 2, 2, 23: quae cum dies noctesque aestuans agitaret, Sall. J. 93: desiderio alicujus, Cic. Fam. 7, 18: invidiā, Sall. C. 23: ingens in corde pudor, Verg. A. 12, 666: at rex Odrysius in illa Aestuat, Ov. M. 6, 490 (cf. uri in id. ib. 7, 22; and ardere in id, ib. 9, 724); Mart. 9, 23: aestuat (Alexander) infelix angusto limite mundi (the figure is derived from the swelling and raging of the sea when confined), Juv. 10, 169; so Luc. 6, 63.
— Esp. in prose, to waver, to vacillate, to hesitate, to be uncertain or in doubt, to be undecided: dubitatione, Cic. Verr. 2, 2, 30: quod petiit, spernit; repetit quod nuper omisit; Aestuat et vitae disconvenit ordine toto, Hor. Ep. 1, 1, 99: sic anceps inter utramque animus aestuat, Quint. 10, 7, 33; Suet. Claud. 4: aestuante rege, Just. 1, 10.