English

Adverb

imperturbably ‎(comparative more imperturbably, superlative most imperturbably)

1. In an imperturbable manner; calmly.

References

• imperturbably in The Century Dictionary, The Century Co., New York, 1911
• imperturbably in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913