Early Noldorin
rhosta-
verb. *to rise
amrosta-
verb. *to rise
amra- Archaic
verb. *to rise, *to rise; [G.] to go up and down; live in the mountains; roam, wander
There are more words but they are from Tolkien's earlier conceptional periods. Tolkien likely changed these words as he evolved the aesthetics and completeness of the languages. You may even find languages that Tolkien later rejected. Do not mix words from different time periods unless you are familiar with the phonetic developments.
Below: Tolkien's Late Period (1950–1973). These are from Tolkien's late conceptual period — his most settled forms of the languages. Prefer these over the earlier ones above when composing new text.
A verb in the Gnomish Lexicon of the 1910s appearing as G. amra- “go up and down; live in the mountains; roam, wander”, probably a verb form of G. am “up(wards)” (GL/19). A similar verb appeared in the Early Noldorin Dictionary of the 1920s as ᴱN. amró that Tolkien described as an “old irregular verb”, of which the modern form was ᴱN. rhosta- or amrosta- (PE13/159). These 1920s verbs appeared under the entry for ᴱN. amrost “rising” functioning as the infinitive form of these verbs, so these 1920s verbs probably meant “✱to rise”. See the entry for N. eria- for later verbs meaning “rise”.