the e comes from
26a above - I have over (e)
31a using few words - I have laconic (L)
35a wacky- giving eccentric ((I)
41a ended - terminated (t)
46a aural repetition - echo (c)
52a bomb or shell fragments - shrapnel (L)
58a is an actress Lucy ((L)
60a evenness - symmetry (Y)
Yes, I wondered if CONCISE could replace LACONIC
But that still leaves the T looking wrong- and for economically to work there can't be a gap between the I in eccentric and the C in echo
adjective. relating to or having the shape of an ellipse. relating to or resulting from ellipsis. (of speech, literary style, etc) very condensed or concise, often so as to be obscure or ambiguous.