laugh (v.) Copy link Outline 1. rīdeo, si, sum, 2 (most gen. term, including to smile)2. căchinno, 1; also, cachinnor, 1 (to laugh aloud, explode with laughter)3. very often expr. by rīsus, ūs; căchinnus, i • laugh (v.): 1. rīdeo, si, sum, 2 (most gen. term, including to smile): Crassus l.'d once in his life, Crassus semel in vita risit, Cic. Fin. 5, 30, fin.: to speak the truth l.ing (playfully), ridentem dicere verum, Hor. S. 1, 1, 24. Often fig., cf. Lucr. 1, 8, tibi rident aequora ponti: v. to smile. 2. căchinno, 1; also, cachinnor, 1 (to laugh aloud, explode with laughter): cf. Cic. Verr. 3, 25, 62, ridere convivae; cachinnare (al. -ari) ipse Verres: Lucr. 3. very often expr. by rīsus, ūs; căchinnus, i: to set people l.ing, risum movere, Cic. de Or. 2, 58, 235: the populace burst out l.ing, r. populi factus est, id. Verr. 4, 12, 27: to burst out l.ing all at once, subito in cachinnos effundi, Suet. Cal. 32: v. laugh (subs.), laughter.