tvirtinu
tvirtinu is a Lithuanian verb form. It is the first-person singular present indicative of the verb tvirtinti, which means to strengthen, fortify, fix in place, or to confirm/substantiate. The form tvirtinu can be used in both physical and abstract senses, reflecting the versatility of the root tvirt- meaning firm or strong.
Etymology and related forms: tvirtinti derives from the Lithuanian root tvirt-, linked to the concept of firmness.
Grammar and usage: As a present tense form, tvirtinu is used when the speaker themselves is performing
Meanings in practice: physically, tvirtinti can mean to fasten, secure, or reinforce components or structures. metaphorically,
Notes: In everyday language, tvirtinti the broader sense of securing is common, while more precise terms like