General meaning: expressionless  

Italian

con diligenza

with diligence, carefully

con discretezza

with discretion, discreetly, cautiously

con pedanteria

pedantically, calm and unemotional

discreto

subdued, discreet

egualmente

evenly, equal stress

freddamente

coldly, indifferently

indifferente

indifferent, careless

moderatamente

with moderation

negligente

negligently, carelessly

sommesso

subdued

tepidamente

lukewarmly, indifferently, even & unimpassioned

ugualmente

equally, evenly, tranquilly

German

nachlässig

carelessly

pedantisch

pedantically, calm and unemotional