This study is about the grammatical description of Saaho, a language spoken by the Irobrnpeople in the Northern part of Ethiopia. The description includes phonology, morphologyrnand syntax.rnIn the phonology part inventory of phonemes has been made with respect to segmentalrnand supra segmental phonemes. Thus, the language has 22 consonant and 5 vowelsrnsegmental phonemes. Gemination of consonants, vowel length and tone constituternmeaning distinction and are suprasegmental phonemes. In addition, cooccurencernrestriction of segments, syllabic structure and morpho phonological processes have beenrndescribed based on distribution.rnIn the morphology part description and classification of words has been made byrnconsidering universal and language specific features. In the language nouns, verbs andrnadjective have been considered as major word classes, and adverbs, pronouns,rndeterminers, demonstratives, postpositions, and conjunctions are minor word classes.rnSome specific components of nominal morphology include sub classes of nouns - proper,rncommon; count and mass. Number: (Plural marking and singulative marking), Gender:rnmasculine and feminine where feminine is the default gender. Formal and semanticrngender assignment systems have been described. Tone plays an important role in thernmorphology of the language. Tone distinguishes gender in nouns. It also serves in casernassignment as in nominative, accusative and genitive cases. In addition, nominalrnderivation involve different processes like affixation, compounding, stem modification,rntone alternation, reduplication etc that are employed in forming different sub classes ofrnnouns.rnVerbs are grouped into four sub classes- class I both prefixing and suffixing verbs, classrnII suffixing verbs, class III reduced-verb form and class IV compound verbs. Class Irnverbs make use of affixation and ablaut process but other classes involve affixation. Inrnaddition description of verbal inflection and derivation has been made. The verbs showrninflections for subject agreement, aspect (Perfective, imperfective, and progressive) andmood subjunctive, jussive, imperative and infinitive. In the verb derivation: causative,rnmiddle, passive, intensive, attenuative, frequentative and inchoative have been described.rnWord order the syntax of phrases (NP- Modifier Head N), PP â€“ NP Postposition) andrnsimple sentence has (SOV), and describing different types of clause have been made. Inrnaddition, analysis of sentence types as declarative, interrogative, negative has been made