A Grammatical Dictionary of Botanical Latin

celer (m), celeris (f), celere (n) (adj.B): swift, fleet, quick, speedy, hasty, precipitate; rapid, hurried; compar. celerior,-ius (adj.B), superl. celerissimus,-a,-um (adj.A), but cf. fata celerrima (Lewis & Short); syn. expeditus, promptus, velox, citatus; opp. tardus, segnis, lentus; see swift;

NOTE: apparently (Lewis & Short) declined like acer (m.), acris (f.), acre (n.) (adj.B) but with retention of the ‘er’ throughout;

              singular                             plural
       m.        f.         n.              m.        f.          n.
Nom. celer     celeris    celere        celeres     celeres     celeria    
Gen. celeris   celeris    celeris       celerium    celerium    celerium    
Dat. celeri    celeri     celeri        celeribus   celeribus   celeribus 
Acc. celerem   celerem    celere        celeres     celeres     celeria    
Abl. celeri    celeri     celeri        celeribus   celeribus   celeribus

- (various weapons) sagitta celer, a swift or speedy arrow.

- (flowing water) flumen,-inis (s.n.III) celere, abl. sg. flumine celeri, a swift river; rivulus,-i (s.m.II) celer, abl. sg. rivulo celeri, a swift creek.

- celeripes,-pedis (adj.B): swift-footed.

- in currentibus celeribus aquarum, in swift currents of water.

- vortex,-icis (s.m.III) celer, abl. sg. vortice celeri: a swift whirlpool.

- (of animals) aves celeres, swift birds; equus celer, a fleet or swift horse.

- sententiis celeribus, with hasty (rash, precipitate) opinions.

- motus trichomatum regulariter et lente terebrans, haud irregularis et celer, motion of filaments regularly and slowly turning spirally, not irregular and rapid (Stearn).

Rosa celer, “swift; from its rapid growth” (Fernald 1950).