Nagiisip

Nagiisip is a Filipino verb meaning "is thinking" or "thinking about something." It is the present progressive form of the root isip, which means to think or to consider. In formal writing, the word is often hyphenated as nag-iisip, while casual text may also render it as nag-iisip without the hyphen.

Usage involves describing an ongoing mental activity such as weighing options, planning, or reflecting. It is commonly used with phrases that indicate the topic of thought, such as tungkol sa, o kung paano. Examples include: Nagiisip ako tungkol sa susunod na hakbang. Nagiisip siya kung aling damit ang isuot. These constructions convey that thinking is currently taking place rather than a completed action.

Nuances and related terms help clarify meaning. The form emphasizes the act of thinking as it happens, rather than the content alone. Related forms include iniisip (is thinking or thinks about a specific object or idea) and pag-iisip (the act of thinking or contemplation as a concept). The Filipino verbal system uses affixes to indicate aspect and focus, so speakers choose among nag-iisip, iniisip, or other forms depending on emphasis and context.

In summary, nag-iisip describes ongoing cognitive activity in Tagalog, useful for expressing current consideration, reflection, or planning. It is one of several related forms built around the root isip.