When describing a market trend or sentiment, bearishly implies a negative outlook and anticipation of a decline. However, there are various other synonyms that can be used interchangeably depending on the context. One of the alternatives is "pessimistically," which refers to a negative attitude towards the future and low confidence in a successful outcome. Other synonyms for bearishly include "cynically," "dourly," "gloomily," "hopelessly," and "downcastly." These synonyms convey similar meanings of a negative outlook, but they also add a varying degree of emotion and tone to the message, depending on the context and the preference of the speaker.