certainly

adv.

1. Undoubtedly; definitely: This is certainly not my writing.
2. By all means; of course: You may certainly join us.
3. Surely: They certainly are hard workers.

adverb

Without question: absolutely, doubtless, doubtlessly, positively, undoubtedly. See certain/uncertain, limited/unlimited.

adv

Definition: without doubt
Antonyms: doubtfully, dubiously, equivocally, questionably

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IN BRIEF: adv. - Definitely or positively.

Galileo called doubt the father of invention; it is certainly the pioneer. — Christian Bovee 

Dansk (Danish)
adv. - bestemt, sikkert

Nederlands (Dutch)
beslist, vast en zeker

Français (French)
adv. - assurément, certainement

Deutsch (German)
adv. - bestimmt, gewiß, sicher

Ελληνική (Greek)
adv. - βεβαίως, ασφαλώς

Italiano (Italian)
sicuramente, di sicuro, certamente, certo, di certo

Português (Portuguese)
adv. - certamente

Русский (Russian)
конечно, безусловно

Español (Spanish)
adv. - ¡desde luego!, ¡por supuesto!, ¡naturalmente!

Svenska (Swedish)
adv. - säkert, säkerligen, ja visst

中文（简体）(Chinese (Simplified))
确定地

中文（繁體）(Chinese (Traditional))
adv. - 確定地

한국어 (Korean)
adv. - 확실히, 물론이오

日本語 (Japanese)
adv. - 確かに, もちろんです

العربيه (Arabic)
‏(ظرف) بالتأكيد, بلا سك‏

עברית (Hebrew)
adv. - ‮כמובן, בלי ספק‬

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