Synonyms to en passant

apropos, a propos, about, ad rem, adapted, admissible, against, anent, appertaining, applicable, applying, apposite, appropriate, apropos of, apt, as for, as regards, as respects, as to, becoming, befitting, belonging, by the by, by the way, concerning, dovetailing, felicitous, fit, fitted, fitting, for example, geared, germane, happy, in passing, in point, in re, in reference to, in respect to, incidentally, involving, just right, likely, material, meet, meshing, on the button, opportune, par exemple, parenthetically, pat, pertaining, pertinent, proper, qualified, re, regarding, relevant, respecting, right, seasonable, sortable, speaking of, suitable, suited, suiting, tailored, to the point, to the purpose, touching, toward, with respect to, accidental, aimless, by-the-way, casual, desultory, deviative, digressive, discursive, episodic, excursive, incidental, loose, maundering, occasional, parenthetical, rambling, roving, wandering, passing, abandonment