WordNet: narcotic, soporiferous, soporific

inducing mental lethargy; "a narcotic speech"

• similar to uninteresting

narcotic

• (suomi) narkoottinen (synonyymi)

soporiferous

• (suomi) unelias (synonyymi)

soporific

• (englanti) soporific (derivationally related)
• (suomi) uninen (synonyymi)