Ostensibly

Part of Speech– Adverb

Origin- Ostensible ( Adjective)

Definition– is used to describe something that seems to be true or is officially stated to be true, but about which you or other people have doubts.

Source: Collins Dictionary

Found in the essay ” Reading a poem; 20 strategies ” by Mark Yakich, in the fifteenth strategy

The definition of the word Ostensible or the word Ostensibly ( as used in the reading), helps me to understand it as a word used to describe something that may be true, but may not have facts that support it, hence might cause people to doubt it.