No definitions found for 'of great cost'
Perhaps one of these:
observantly,
observant,
officer of the day,
observableness,
officiary,
ovis argali,
officer of the deck,
observing,
ophiosaurus ventralis,
obscuring,
office hours,
obscureness,
off guard,
observation station,
offscourings,
objurgated,
observed fire,
observable,
obscurer,
obscure,
office workstations limited,
observancy,
observably,
observator,
ovis aries,
of course,
officer's mess,
obscurely,
objurgating,
objurgatory,
obcordate,
observed,
observation tower,
observative,
observer,
obscurantist,
offshore,
off-guard,
office wire,
observership,
obscurantism,
objurgation,
observation dome,
observants,
observation deck,
observer's meridian,
objurgate,
observational research,
observance,
offscouring,
officering,
opcr,
ophisaurus,
ovigerous,
of a certainty,
objuration,
obscure rays,
observandum,
observatory,
ophiocaryon paradoxum,
obscurement,
officered,
observation,
observe,
officer,
observational equivalence,
obscurest,
observational,
offshore rig,
obscurity,
obscurant,
observatories,
off his guard,
observation post,
observanda,
obscured,
officer of the watch,
of a certain,
observantine,
opposer,
observingly,
obscuration,
observation car