certainly
adv. degreeadv. without any doubt. You use this when you are completely sure about something or to agree strongly with a statement.
adv. used to express complete certainty or to emphasize a positive response. Often functions as a sentence adverb to indicate the speaker's attitude toward the truth of a statement.
I will certainly help you with your homework.
The new policy will certainly improve the safety of the workers, though it might take some time to implement.
While the initial costs are high, the long-term benefits of renewable energy will certainly outweigh the investment as technology continues to advance.
From Middle English certeynly; equivalent to certain + -ly.
Typically placed before the main verb, after the auxiliary verb, or at the beginning of a sentence for emphasis.
I certainly am not knowing the answer.I certainly do not know the answer.When used for emphasis with 'not', it usually precedes the negative particle in simple tenses.